Step-by-step Maths Level 5: Decimals to tenths

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   8
2. Write the tenths after a decimal point. 1/10 is 1 tenths, so the digit 1 goes after the point.
   8.1
3. Write the answer. A decimal point separates the whole number from the tenths.
   8.1

Check. Check: 1/10 is 0.1, and 8 + 0.1 = 8.1.

Watch out. The tenths digit is one place after the decimal point.

Method. The first digit after the point is the number of tenths.

1. Find the tenths digit. It is the first digit after the decimal point.
   The digit is 8
2. Write its value. 8 tenths is 8/10.
   8/10 = 0.8
3. Write the answer. The value of the digit is a decimal less than one.
   0.8

Check. Check: 0.8 + 4 = 4.8.

Watch out. Do not write the digit as a whole number. 4 in 3.4 is 0.4, not 4.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   6
2. Write the tenths after a decimal point. 1/10 is 1 tenths, so the digit 1 goes after the point.
   6.1
3. Write the answer. A decimal point separates the whole number from the tenths.
   6.1

Check. Check: 1/10 is 0.1, and 6 + 0.1 = 6.1.

Watch out. The tenths digit is one place after the decimal point.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   2
2. Write the tenths after a decimal point. 6/10 is 6 tenths, so the digit 6 goes after the point.
   2.6
3. Write the answer. A decimal point separates the whole number from the tenths.
   2.6

Check. Check: 6/10 is 0.6, and 2 + 0.6 = 2.6.

Watch out. The tenths digit is one place after the decimal point.

Method. Count the tenths from the lower whole number to the dot.

1. Find the whole numbers either side. The dot is between 3 and 4.
   3 and 4
2. Count the tenths from the lower whole number. Each small step between two whole numbers is one tenth.
   4 tenths after 3
3. Write the decimal. Whole number first, then the point and the tenths.
   3.4

Check. Check: 3.4 is 4 steps past 3, and there are 10 steps to 4.

Watch out. There are ten tenths between two whole numbers. Count the small steps, not the big ones.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   1
2. Write the tenths after a decimal point. 2/10 is 2 tenths, so the digit 2 goes after the point.
   1.2
3. Write the answer. A decimal point separates the whole number from the tenths.
   1.2

Check. Check: 2/10 is 0.2, and 1 + 0.2 = 1.2.

Watch out. The tenths digit is one place after the decimal point.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   9
2. Write the tenths after a decimal point. 7/10 is 7 tenths, so the digit 7 goes after the point.
   9.7
3. Write the answer. A decimal point separates the whole number from the tenths.
   9.7

Check. Check: 7/10 is 0.7, and 9 + 0.7 = 9.7.

Watch out. The tenths digit is one place after the decimal point.

Method. Count the tenths from the lower whole number to the dot.

1. Find the whole numbers either side. The dot is between 9 and 10.
   9 and 10
2. Count the tenths from the lower whole number. Each small step between two whole numbers is one tenth.
   3 tenths after 9
3. Write the decimal. Whole number first, then the point and the tenths.
   9.3

Check. Check: 9.3 is 3 steps past 9, and there are 10 steps to 10.

Watch out. There are ten tenths between two whole numbers. Count the small steps, not the big ones.

Method. Count the tenths from the lower whole number to the dot.

1. Find the whole numbers either side. The dot is between 8 and 9.
   8 and 9
2. Count the tenths from the lower whole number. Each small step between two whole numbers is one tenth.
   7 tenths after 8
3. Write the decimal. Whole number first, then the point and the tenths.
   8.7

Check. Check: 8.7 is 7 steps past 8, and there are 10 steps to 9.

Watch out. There are ten tenths between two whole numbers. Count the small steps, not the big ones.

Method. The first digit after the point is the number of tenths.

1. Find the tenths digit. It is the first digit after the decimal point.
   The digit is 7
2. Write its value. 7 tenths is 7/10.
   7/10 = 0.7
3. Write the answer. The value of the digit is a decimal less than one.
   0.7

Check. Check: 0.7 + 8 = 8.7.

Watch out. Do not write the digit as a whole number. 4 in 3.4 is 0.4, not 4.

Method. The first digit after the point is the number of tenths.

1. Find the tenths digit. It is the first digit after the decimal point.
   The digit is 2
2. Write its value. 2 tenths is 2/10.
   2/10 = 0.2
3. Write the answer. The value of the digit is a decimal less than one.
   0.2

Check. Check: 0.2 + 8 = 8.2.

Watch out. Do not write the digit as a whole number. 4 in 3.4 is 0.4, not 4.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   1
2. Write the tenths after a decimal point. 8/10 is 8 tenths, so the digit 8 goes after the point.
   1.8
3. Write the answer. A decimal point separates the whole number from the tenths.
   1.8

Check. Check: 8/10 is 0.8, and 1 + 0.8 = 1.8.

Watch out. The tenths digit is one place after the decimal point.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   6
2. Write the tenths after a decimal point. 3/10 is 3 tenths, so the digit 3 goes after the point.
   6.3
3. Write the answer. A decimal point separates the whole number from the tenths.
   6.3

Check. Check: 3/10 is 0.3, and 6 + 0.3 = 6.3.

Watch out. The tenths digit is one place after the decimal point.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   9
2. Write the tenths after a decimal point. 9/10 is 9 tenths, so the digit 9 goes after the point.
   9.9
3. Write the answer. A decimal point separates the whole number from the tenths.
   9.9

Check. Check: 9/10 is 0.9, and 9 + 0.9 = 9.9.

Watch out. The tenths digit is one place after the decimal point.

Method. The first digit after the point is the number of tenths.

1. Find the tenths digit. It is the first digit after the decimal point.
   The digit is 5
2. Write its value. 5 tenths is 5/10.
   5/10 = 0.5
3. Write the answer. The value of the digit is a decimal less than one.
   0.5

Check. Check: 0.5 + 4 = 4.5.

Watch out. Do not write the digit as a whole number. 4 in 3.4 is 0.4, not 4.

Method. Write the whole number, then a decimal point, then the tenths digit.

1. Write the whole number first. This is the part before the decimal point.
   2
2. Write the tenths after a decimal point. 8/10 is 8 tenths, so the digit 8 goes after the point.
   2.8
3. Write the answer. A decimal point separates the whole number from the tenths.
   2.8

Check. Check: 8/10 is 0.8, and 2 + 0.8 = 2.8.

Watch out. The tenths digit is one place after the decimal point.