Estimate the sum by rounding each number to the nearest whole number and then adding.7.823 + 3.177 + 7.96
Question
Estimate the sum by rounding each number to the nearest whole number and then adding.7.823 + 3.177 + 7.96
Solution
Step 1: Round each number to the nearest whole number.
7.823 rounds to 8 because .823 is closer to 1 than it is to 0. 3.177 rounds to 3 because .177 is closer to 0 than it is to 1. 7.96 rounds to 8 because .96 is closer to 1 than it is to 0.
Step 2: Add the rounded numbers together.
8 (rounded from 7.823) + 3 (rounded from 3.177) + 8 (rounded from 7.96) equals 19.
So, the estimated sum of 7.823, 3.177, and 7.96, when each number is rounded to the nearest whole number, is 19.
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