Q. Estimate the sum. Round each number to the nearest whole number, then add.2139+61514The sum is approximately _____.
Round Numbers: Step 1: Round each number to the nearest whole number. 2139 rounds to 3 because 139 is closer to 1 than to 0.61514 rounds to 7 because 1514 is very close to 1.
Add Rounded Numbers: Step 2: Add the rounded numbers. 3+7=10
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