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Question 1 of 4
Round off 4673.6 to the nearest whole number.
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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
Method One
Since we are rounding to the nearest whole number, or units (1), apply the rounding rule on the tenths value, which is 6.
Since 6 is within 5−9, add 1 to the units value, then remove any other digits to its right.
Therefore, 4673.6 rounded off to the nearest whole number is 4674.
Method Two
Draw a number line with ten parts then mark the leftmost part as 4673 and the rightmost part as 4674
Next, mark 4673.6 within the number line, which should be the sixth part.
Then, mark the middle part, which indicates 4673.5
For rounding off numbers, follow these rules with regards to the number line:
Left of the middle mark=Rounded to the leftmost value (4673)
Right of the middle mark=Rounded to the rightmost value (4674)
Since 4673.6 is to the right of the middle mark, 4673.6 will be rounded off to the rightmost value, which is 4674.
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Question 2 of 4
Round off 18.99 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 9.
Since 9 is within 5−9, add 1 to the tenths value, then remove any other digits to its right.
In this case, the tenths value will become 10, so we will take the 0 as the tenths value and add 1 to the units value.
Therefore, 18.99 rounded off to one decimal place is 19.0.
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Question 3 of 4
Round off 25.753 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 3.
Since 3 is within 0−4, leave the hundredths value as is, then remove any other digits to its right.
Therefore, 25.753 rounded off to two decimal places is 25.75.
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Question 4 of 4
Round off 0.9074 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 4.
Since 4 is within 0−4, leave the thousandths value as is, then remove any other digits to its right.
Therefore, 0.9074 rounded off to three decimal places is 0.907.
