Year 6 Maths reasoning (SATs) · Number reasoning · Summary
Year 6 Maths reasoning (SATs) Number reasoning: summary and key words
Part of the Year 6 Maths reasoning (SATs) number reasoning chapter. Chapter overview · whole chapter on one page
Chapter summary
| Skill | Method |
|---|---|
| Place value | Digit x column value. 6 in 4,862,139 is worth 60,000. |
| Rounding | Look at the digit next to the rounding column: 5 or more rounds up. |
| Negative numbers | Count across zero on a number line; -8 is smaller than -2. |
| Order of operations | Brackets, then x and divide, then add and subtract. |
| Factors and multiples | Factors divide exactly; multiples are in the times table. |
| Primes | Exactly two factors: 1 and itself. 1 is not prime. |
| Choosing the operation | Read twice; decide total, take away, share or repeat. |
| Checking | Round and estimate; does the answer have the right size? |
Can you…?
- I can say the value of a digit in a number up to 10,000,000
- I can round to the nearest 10, 100, 1,000 or 10,000 and explain my choice
- I can count through zero and find differences between negative numbers
- I can use brackets and the order of operations
- I can choose the operation for a multi-step problem and check it with an estimate
Key terms
- factor
- a number that divides exactly into another number
- multiple
- a number in the times table of another number
- prime number
- a number with exactly two factors, 1 and itself
- negative number
- a number less than zero, such as -4
- order of operations
- the rule for which calculation to do first: brackets, then multiply and divide, then add and subtract
- estimate
- a rough answer found by rounding the numbers first