Year 4: Pictograms
Part of the Year 4 pictograms, bar charts and time graphs chapter. Chapter overview · whole chapter on one page · Download worksheet (PDF) · Answers (PDF)
Pictograms
A pictogram uses small pictures, called symbols, to show data. Each symbol is one thing that is counted. The picture below shows the pets that children in Class 4 have. Each heart stands for 1 pet.
When there is lots of data, we do not want to draw hundreds of pictures. So one symbol can stand for 2, 5 or 10. The key tells us how many each symbol is worth. Always read the key first!
Sometimes the data does not fit exactly. A half symbol is worth half of what a whole symbol is worth. If the key says 1 symbol = 10 people, then a half symbol is 5 people. To draw a pictogram, divide each number by the key to find how many symbols to draw.
Key ideas
- The key says how many one symbol stands for. Read it first.
- To read a row: count the symbols, then multiply by the key. A half symbol is worth half the key.
- To draw a row: divide the number by the key. Use a half symbol for a remainder that is half the key.
- Draw all the symbols the same size, in a straight line with equal gaps.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Cats.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 1 pets
- Count the symbols in the row for Cats. Multiply the number of symbols by what one symbol is worth.Cats: 8 symbols
8 × 1 = 8 - Write the answer. Cats = 8 pets
Check. Count back: 8 ÷ 1 = 8 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read each number from the picture, then add them all.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 2 stickers
- Read every number. We need these numbers for the calculation.Mon = 6
Tue = 10
Wed = 4
Thu = 8
Fri = 12 - Add the numbers together. Altogether means add everything. Add one number at a time.6 + 10 + 4 + 8 + 12
6 + 10 = 16
16 + 4 = 20
20 + 8 = 28
28 + 12 = 40 - Write the answer. Total = 40 stickers
Check. Add in the opposite order: 12 + 8 + 4 + 10 + 6 = 40. ✓
Watch out. Do not leave out a row or a bar. Check you have used every one.
Key words. The difference between two numbers is how much bigger one is than the other. We find it by subtracting. “How many more” and “how many fewer” questions are difference questions. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. To find “how many more”, read both numbers and then subtract the smaller from the bigger.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 goals
- Read the numbers we need from the picture. We need these numbers for the calculation.Match 3 = 25
Match 2 = 10 - Find the difference. To find how many more (or fewer), subtract the smaller number from the bigger number.25 − 10 = 15
- Write the answer. 15 more
Check. Add back: 10 + 15 = 25. ✓
Watch out. Subtract: do not add. The question asks for the difference.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Mon.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 cars
Half a symbol = 10 ÷ 2 = 5 cars - Count the symbols in the row for Mon. Multiply the number of symbols by what one symbol is worth.Mon: 4 whole symbols and 1 half symbol
4 × 10 = 40
Half symbol = 5
40 + 5 = 45 - Write the answer. Mon = 45 cars
Check. Count back: 45 ÷ 10 = 4 and a half symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. The key is how much one symbol is worth. Divide the number by the number of symbols.
- Count the symbols in the row. We need to know how many symbols make the number.Books: 4 symbols
- Divide the number by the symbols. If 4 symbols are worth 20, one symbol is worth 20 ÷ 4.20 ÷ 4 = 5
- Write the answer. 1 symbol = 5
Check. 4 × 5 = 20. ✓
Watch out. Divide: do not add or subtract.
| Day | Mon | Tue | Wed | Thu | Fri |
|---|---|---|---|---|---|
| Pupils | 40 | 25 | 30 | 15 | 35 |
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide each number by the key to find how many symbols to draw.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 pupils
Half a symbol = 10 ÷ 2 = 5 pupils - Work out how many symbols each row needs. Divide each number by the key. A half symbol is used for half a key.Tue: 25 ÷ 10 = 2 remainder 5, so 2 symbols and a half symbol
Thu: 15 ÷ 10 = 1 remainder 5, so 1 symbol and a half symbol - Draw the symbols. Draw them neatly in a line, with the same size and the same gaps.
Check. Count the symbols you drew. They should be worth 25, 15. ✓
Watch out. Use a half symbol if the number is half way between two whole symbols.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Choose a key, divide every number by the key to find the symbols for each row, then draw the pictogram with its key.
- Choose a key. The key should divide into every number. The biggest number is 12. With a key of 2 we need only 6 symbols for the longest row.1 symbol = 2 books
- Work out the symbols for each row. Divide every number by the key.Mon: 8 ÷ 2 = 4
Tue: 12 ÷ 2 = 6
Wed: 6 ÷ 2 = 3
Thu: 10 ÷ 2 = 5 - Draw the pictogram and the key. Draw the symbols for each row. Do not forget to write the key.
Check. Count the symbols in one row and multiply by 2 to check. ✓
Watch out. Always draw the key. Without it nobody knows what a symbol is worth.
Watch out
Do not read a symbol as 1 when the key says it is worth more. Always read the key first. A half symbol is half of the key, not half of 1.Exercise 11B Pictograms
Non-calculatorKey words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Football.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 1 children
- Count the symbols in the row for Football. Multiply the number of symbols by what one symbol is worth.Football: 9 symbols
9 × 1 = 9 - Write the answer. Football = 9 children
Check. Count back: 9 ÷ 1 = 9 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Dancing.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 1 children
- Count the symbols in the row for Dancing. Multiply the number of symbols by what one symbol is worth.Dancing: 11 symbols
11 × 1 = 11 - Write the answer. Dancing = 11 children
Check. Count back: 11 ÷ 1 = 11 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Judo.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 1 children
- Count the symbols in the row for Judo. Multiply the number of symbols by what one symbol is worth.Judo: 4 symbols
4 × 1 = 4 - Write the answer. Judo = 4 children
Check. Count back: 4 ÷ 1 = 4 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Find each number on the picture, then add.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 1 children
- Read the numbers we need from the picture. We need these numbers for the calculation.Football = 9
Judo = 4 - Add them. Together means add.9 + 4 = 13
- Write the answer. 13 children
Check. Subtract one number back: 13 − 9 = 4, which is the other number. ✓
Watch out. Make sure you read the right rows.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Apples.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 2 kg
Half a symbol = 2 ÷ 2 = 1 kg - Count the symbols in the row for Apples. Multiply the number of symbols by what one symbol is worth.Apples: 6 symbols
6 × 2 = 12 - Write the answer. Apples = 12 kg
Check. Count back: 12 ÷ 2 = 6 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Pears.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 2 kg
Half a symbol = 2 ÷ 2 = 1 kg - Count the symbols in the row for Pears. Multiply the number of symbols by what one symbol is worth.Pears: 3 whole symbols and 1 half symbol
3 × 2 = 6
Half symbol = 1
6 + 1 = 7 - Write the answer. Pears = 7 kg
Check. Count back: 7 ÷ 2 = 3 and a half symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Plums.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 2 kg
Half a symbol = 2 ÷ 2 = 1 kg - Count the symbols in the row for Plums. Multiply the number of symbols by what one symbol is worth.Plums: 4 whole symbols and 1 half symbol
4 × 2 = 8
Half symbol = 1
8 + 1 = 9 - Write the answer. Plums = 9 kg
Check. Count back: 9 ÷ 2 = 4 and a half symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Cherries.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 2 kg
Half a symbol = 2 ÷ 2 = 1 kg - Count the symbols in the row for Cherries. Multiply the number of symbols by what one symbol is worth.Cherries: 2 symbols
2 × 2 = 4 - Write the answer. Cherries = 4 kg
Check. Count back: 4 ÷ 2 = 2 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Class 4.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 books
- Count the symbols in the row for Class 4. Multiply the number of symbols by what one symbol is worth.Class 4: 7 symbols
7 × 5 = 35 - Write the answer. Class 4 = 35 books
Check. Count back: 35 ÷ 5 = 7 symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read every number, then find the smallest one.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 books
- Read every number. We need these numbers for the calculation.Class 3 = 20
Class 4 = 35
Class 5 = 15
Class 6 = 30 - Compare the numbers. Look for the smallest number.The smallest number is 15.
- Write the answer. The question asks for the name, not the number.Class 5
Check. No other number is smaller than 15. ✓
Watch out. The question asks which one, so write the name.
Key words. The difference between two numbers is how much bigger one is than the other. We find it by subtracting. “How many more” and “how many fewer” questions are difference questions. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. To find “how many more”, read both numbers and then subtract the smaller from the bigger.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 books
- Read the numbers we need from the picture. We need these numbers for the calculation.Class 6 = 30
Class 5 = 15 - Find the difference. To find how many more (or fewer), subtract the smaller number from the bigger number.30 − 15 = 15
- Write the answer. 15 more
Check. Add back: 15 + 15 = 30. ✓
Watch out. Subtract: do not add. The question asks for the difference.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read each number from the picture, then add them all.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 books
- Read every number. We need these numbers for the calculation.Class 3 = 20
Class 4 = 35
Class 5 = 15
Class 6 = 30 - Add the numbers together. Altogether means add everything. Add one number at a time.20 + 35 + 15 + 30
20 + 35 = 55
55 + 15 = 70
70 + 30 = 100 - Write the answer. Total = 100 books
Check. Add in the opposite order: 30 + 15 + 35 + 20 = 100. ✓
Watch out. Do not leave out a row or a bar. Check you have used every one.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Car.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 people
Half a symbol = 10 ÷ 2 = 5 people - Count the symbols in the row for Car. Multiply the number of symbols by what one symbol is worth.Car: 8 whole symbols and 1 half symbol
8 × 10 = 80
Half symbol = 5
80 + 5 = 85 - Write the answer. Car = 85 people
Check. Count back: 85 ÷ 10 = 8 and a half symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Look at the picto carefully and read off the number for Cycle.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 people
Half a symbol = 10 ÷ 2 = 5 people - Count the symbols in the row for Cycle. Multiply the number of symbols by what one symbol is worth.Cycle: 2 whole symbols and 1 half symbol
2 × 10 = 20
Half symbol = 5
20 + 5 = 25 - Write the answer. Cycle = 25 people
Check. Count back: 25 ÷ 10 = 2 and a half symbols. ✓
Watch out. Do not forget the key. A symbol is not always worth 1. A half symbol is worth half.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read every number, then find the biggest one.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 people
Half a symbol = 10 ÷ 2 = 5 people - Read every number. We need these numbers for the calculation.Bus = 60
Car = 85
Walk = 40
Cycle = 25
Train = 10 - Compare the numbers. Look for the biggest number.The biggest number is 85.
- Write the answer. The question asks for the name, not the number.Car
Check. No other number is bigger than 85. ✓
Watch out. The question asks which one, so write the name.
Key words. The difference between two numbers is how much bigger one is than the other. We find it by subtracting. “How many more” and “how many fewer” questions are difference questions. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. To find “how many more”, read both numbers and then subtract the smaller from the bigger.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 people
Half a symbol = 10 ÷ 2 = 5 people - Read the numbers we need from the picture. We need these numbers for the calculation.Car = 85
Bus = 60 - Find the difference. To find how many more (or fewer), subtract the smaller number from the bigger number.85 − 60 = 25
- Write the answer. 25 more
Check. Add back: 60 + 25 = 85. ✓
Watch out. Subtract: do not add. The question asks for the difference.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read every number, put the numbers in order, then write the names in that order.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 10 cars
Half a symbol = 10 ÷ 2 = 5 cars - Read every number. We need these numbers for the calculation.Mon = 45
Tue = 30
Wed = 55
Thu = 20
Fri = 35 - Put the numbers in order. Start with the biggest and go down.55, 45, 35, 30, 20
- Write the names in the same order. Wed, Mon, Fri, Tue, Thu
Check. The first one is bigger than the next, all the way down. ✓
Watch out. Keep the names with their numbers.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 2. A half symbol stands for 1.1 symbol = 2
- Divide by the key. Dividing tells us how many symbols we need.12 ÷ 2 = 6
- Write the answer. 6 symbols
Check. 6 × 2 = 12. ✓
Watch out. A symbol is not always 1. Always divide by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 5.1 symbol = 5
- Divide by the key. Dividing tells us how many symbols we need.15 ÷ 5 = 3
- Write the answer. 3 symbols
Check. 3 × 5 = 15. ✓
Watch out. A symbol is not always 1. Always divide by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 10. A half symbol stands for 5.1 symbol = 10
- Divide by the key. Dividing tells us how many symbols we need.40 ÷ 10 = 4
- Write the answer. 4 symbols
Check. 4 × 10 = 40. ✓
Watch out. A symbol is not always 1. Always divide by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 10. A half symbol stands for 5.1 symbol = 10
- Divide by the key. Dividing tells us how many symbols we need.45 ÷ 10 = 4 remainder 5
- Use a half symbol for the remainder. The remainder 5 is half of 10, so we draw one half symbol.5 = 10 ÷ 2 → 1 half symbol
- Write the answer. 4 symbols and a half symbol
Check. 4 × 10 + 5 = 45. ✓
Watch out. A symbol is not always 1. Always divide by the key.
| Day | Mon | Tue | Wed | Thu | Fri |
|---|---|---|---|---|---|
| Sandwiches | 20 | 30 | 15 | 25 | 35 |
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide each number by the key to find how many symbols to draw.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 sandwiches
- Work out how many symbols each row needs. Divide each number by the key. A half symbol is used for half a key.Wed: 15 ÷ 5 = 3, so 3 symbols
- Draw the symbols. Draw them neatly in a line, with the same size and the same gaps.
Check. Count the symbols you drew. They should be worth 15. ✓
Watch out. Use a half symbol if the number is half way between two whole symbols.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide each number by the key to find how many symbols to draw.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 sandwiches
- Work out how many symbols each row needs. Divide each number by the key. A half symbol is used for half a key.Fri: 35 ÷ 5 = 7, so 7 symbols
- Draw the symbols. Draw them neatly in a line, with the same size and the same gaps.
Check. Count the symbols you drew. They should be worth 35. ✓
Watch out. Use a half symbol if the number is half way between two whole symbols.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. The key is how much one symbol is worth. Divide the number by the number of symbols.
- Count the symbols in the row. We need to know how many symbols make the number.Blue team: 4 symbols
- Divide the number by the symbols. If 4 symbols are worth 12, one symbol is worth 12 ÷ 4.12 ÷ 4 = 3
- Write the answer. 1 symbol = 3
Check. 4 × 3 = 12. ✓
Watch out. Divide: do not add or subtract.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. The key is how much one symbol is worth. Divide the number by the number of symbols.
- Count the symbols in the row. We need to know how many symbols make the number.Tue: 6 symbols
- Divide the number by the symbols. If 6 symbols are worth 24, one symbol is worth 24 ÷ 6.24 ÷ 6 = 4
- Write the answer. 1 symbol = 4
Check. 6 × 4 = 24. ✓
Watch out. Divide: do not add or subtract.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. The key is how much one symbol is worth. Divide the number by the number of symbols.
- Count the symbols in the row. We need to know how many symbols make the number.Bus: 5 symbols
- Divide the number by the symbols. If 5 symbols are worth 50, one symbol is worth 50 ÷ 5.50 ÷ 5 = 10
- Write the answer. 1 symbol = 10
Check. 5 × 10 = 50. ✓
Watch out. Divide: do not add or subtract.
| Pet | Cats | Dogs | Birds | Fish |
|---|---|---|---|---|
| Number | 8 | 12 | 6 | 10 |
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Choose a key, divide every number by the key to find the symbols for each row, then draw the pictogram with its key.
- Choose a key. The key should divide into every number. The biggest number is 12. With a key of 2 we need only 6 symbols for the longest row.1 symbol = 2 pets
- Work out the symbols for each row. Divide every number by the key.Cats: 8 ÷ 2 = 4
Dogs: 12 ÷ 2 = 6
Birds: 6 ÷ 2 = 3
Fish: 10 ÷ 2 = 5 - Draw the pictogram and the key. Draw the symbols for each row. Do not forget to write the key.
Check. Count the symbols in one row and multiply by 2 to check. ✓
Watch out. Always draw the key. Without it nobody knows what a symbol is worth.
| Plant | Rose | Tulip | Daisy | Lily |
|---|---|---|---|---|
| Sold | 35 | 20 | 40 | 15 |
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Choose a key, divide every number by the key to find the symbols for each row, then draw the pictogram with its key.
- Choose a key. The key should divide into every number. The biggest number is 40. With a key of 5 we need only 8 symbols for the longest row.1 symbol = 5 plants
- Work out the symbols for each row. Divide every number by the key.Rose: 35 ÷ 5 = 7
Tulip: 20 ÷ 5 = 4
Daisy: 40 ÷ 5 = 8
Lily: 15 ÷ 5 = 3 - Draw the pictogram and the key. Draw the symbols for each row. Do not forget to write the key.
Check. Count the symbols in one row and multiply by 5 to check. ✓
Watch out. Always draw the key. Without it nobody knows what a symbol is worth.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 2. A half symbol stands for 1.1 symbol = 2
- Divide by the key. Dividing tells us how many symbols we need.12 ÷ 2 = 6
- Write the answer. 6 symbols
Check. 6 × 2 = 12. ✓
Watch out. A symbol is not always 1. Always divide by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 2. A half symbol stands for 1.1 symbol = 2
- Divide by the key. Dividing tells us how many symbols we need.8 ÷ 2 = 4
- Write the answer. 4 symbols
Check. 4 × 2 = 8. ✓
Watch out. A symbol is not always 1. Always divide by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Divide the number by what one symbol is worth. A remainder that is half the key needs a half symbol.
- Look at the key. One symbol stands for 2. A half symbol stands for 1.1 symbol = 2
- Divide by the key. Dividing tells us how many symbols we need.20 ÷ 2 = 10
- Write the answer. 10 symbols
Check. 10 × 2 = 20. ✓
Watch out. A symbol is not always 1. Always divide by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read the key first. Then count the symbols and multiply.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 2 stars
- Count the symbols for Tuesday. Tom counted these correctly.Tuesday has 8 symbols.
- Multiply by the key. Each symbol is worth 2.8 × 2 = 16
- Answer. Tom forgot to use the key.No, Tom is wrong. Tuesday has 16 stars.
Check. 16 ÷ 2 = 8 symbols. ✓
Watch out. Count the symbols, then multiply by the key.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Read Wednesday from the pictogram, then add 30.
- Read the key. The key tells us what one symbol is worth. Here a symbol is not worth 1.1 symbol = 5 cakes
- Count the symbols in the row for Wed. Multiply the number of symbols by what one symbol is worth.Wed: 2 symbols
2 × 5 = 10 - Add 30 more. Saturday is 30 more than Wednesday.10 + 30 = 40
Check. 40 − 30 = 10. ✓
Watch out. Read the key before you add.
Key words. A pictogram uses small pictures (symbols) to show data. The key tells you how many each symbol stands for. A half symbol stands for half of that number.
Method. Find the pupils for red and blue, then take them from 85. Then divide by the key.
- Find red. 2 whole symbols and a half symbol. A half symbol is 5.2 × 10 + 5 = 25
- Find blue. 3 whole symbols.3 × 10 = 30
- Find green. Take red and blue away from 85.85 − 25 − 30 = 30
- Change 30 into symbols. Divide by the key.30 ÷ 10 = 3, so Green has 3 symbols and no half symbol.
Check. 25 + 30 + 30 = 85. ✓
Watch out. Work out each row in pupils, not in symbols.