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Question 1 of 3
Round off 31.472 to one decimal place.
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If the number you are rounding is followed by numbers between:
- 0 to 4: Round the number down
- 5 to 9: Round the number up
First, mark the decimal places to remain, as well as the digit to its right.
Since we are rounding to one decimal place, apply the rounding rule on the hundredths value, which is 7.
Since 7 is within 5−9, add 1 to the tenths value, then remove any other digits to its right.
Therefore, 31.472 rounded off to one decimal place is 31.5.
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Question 2 of 3
Round off 86.739 to two decimal places.
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If the number you are rounding is followed by numbers between:
- 0 to 4: Round the number down
- 5 to 9: Round the number up
First, mark the decimal places to remain, as well as the digit to its right.
Since we are rounding to two decimal places, apply the rounding rule on the thousandths value, which is 9.
Since 9 is within 5−9, add 1 to the hundredths value, then remove any other digits to its right.
| 86.739 |
= |
86.74 |
Therefore, 86.739 rounded off to two decimal places is 86.74.
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Question 3 of 3
Round off 0.00765 to three decimal places.
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If the number you are rounding is followed by numbers between:
- 0 to 4: Round the number down
- 5 to 9: Round the number up
First, mark the decimal places to remain, as well as the digit to its right.
Since we are rounding to three decimal places, apply the rounding rule on the ten thousandths value, which is 6.
Since 6 is within 5−9, add 1 to the thousandths value, then remove any other digits to its right.
| 0.00765 |
= |
0.008 |
Therefore, 0.00765 rounded off to three decimal places is 0.008.
