What is 18.379 rounded to the nearest hundredth?
A18.37
B18.38
C18.39
D18.4
Answer & Solution
Correct answer: B. 18.38
1. Locate the hundredths place in 18.379, which holds the digit 7.
2. Look at the digit to its right, which is 9.
3. Since 9 is greater than or equal to 5, add 1 to the hundredths digit: 7 + 1 = 8.
4. Remove all digits after the hundredths place.
5. This gives 18.38, so 18.379 rounded to the nearest hundredth is 18.38.
6. 18.37 comes from rounding down instead of up, and 18.39 mistakenly rounds the thousandths digit itself rather than the hundredths digit.
_Source: OpenStax Prealgebra (CC BY 4.0), Ch 5 "Decimals", section 5.1 Decimals_
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