We will discuss here how to round decimal numbers to the nearest hundredths or correct to two decimal places.
To round off decimal numbers to the nearest hundredths, look at the digit in the thousandths place.
1. When the digit in the thousands place is < 5, the thousandths place and following digits are replace by 0.
2. When the digit in the thousands place is = or > 5, the digit in the hundredths places is increased by 1 and the following digits become 0.
Examples on rounding off to correct two place of decimal or rounding off to the nearest hundredths:
(i) 189.434 → 189.430
We see the digit in the thousandths place is 4 then round it to the nearest hundredths which is smaller than the given decimal number. Since 4 < 5 then the decimal number is rounded to 189.430.
(ii) 27.987 → 27.990
We see the digit in the thousandths place is 7 then round it to the nearest hundredths which is greater than the given decimal number. Since 7 > 5 then the decimal number is rounded to 27.990.
(iii) 5.413 → 5.41
We
see the digit in the thousandths place is 3 then round it to the
nearest hundredths which is smaller than the given decimal number. Since 3 < 5 then the decimal number is rounded to 5.41.
(iv) 17.095 → 17.10
We see the digit in the thousandths place is 5 then round it to the nearest hundredths which is greater than the given decimal number. Since 5 = 5 then the decimal number is rounded to 17.10.
(v) 79.836 → 79.84
We see the digit in the thousandths place is 6 then round it to the nearest hundredths which is greater than the given decimal number. Since 6 > 5 then the decimal number is rounded to 79.84.
(vi) 321.321 → 321.32
We
see the digit in the thousandths place is 1 then round it to the
nearest hundredths which is smaller than the given decimal number. Since 1 < 5 then the decimal number is rounded to 321.32.
Rounding off Decimal Fractions.
Worksheet on Rounding off number.
5th Grade Numbers Page
5th Grade Math Problems
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