Correct to One Decimal Place
We will discuss here how to round off decimal numbers to the nearest tenths or correct to one decimal place.
To round off decimal numbers to the nearest tenth, look at the digit in the hundredths place.
1. When the digit in the hundredths place is < 5, the hundredths place and following digits are replaced by 0.
2. When the digit in the hundredths place is = or > 5, the digit in the tenths places is increased by 1 and the following digits become 0.
Examples on rounding off to correct one place of decimal or rounding off to the nearest tenths:
(i) 14.732 → 14.700
We see the digit in the hundredths place is 3 then round it to the nearest tenths which is smaller than the given decimal number. Since 3 < 5 then the decimal number is rounded to 14.700.
(ii) 56.897 → 56.900
We see the digit in the hundredths place is 9 then round it to the nearest tenths which is greater than the given decimal number. Since 9 > 5 (8 + 1 = 9) then the decimal number is rounded to 56.900.
(iii) 79.49 → 79.5
We see the digit in the hundredths place is 9 then round it to the nearest tenths which is greater than the given decimal number. Since 9 > 5 then the decimal number is rounded to 79.5.
(iv) 6.93 → 6.90
We see the digit in
the hundredths place is 3 then round it to the nearest tenths which is
smaller than the given decimal number. Since 3 < 5 then the decimal number is rounded to 6.90.
(v) 185.04 → 185.00
We see the digit in
the hundredths place is 4 then round it to the nearest tenths which is
smaller than the given decimal number. Since 4 < 5 then the decimal number is rounded to 185.00.
(vi) 80.715 → 80.7
We see the digit in
the hundredths place is 1 then round it to the nearest tenths which is
smaller than the given decimal number. Since 1 < 5 then the decimal number is rounded to 80.7.
Rounding off Decimal Fractions.
Worksheet on Rounding off number.
5th Grade Numbers Page
5th Grade Math Problems
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