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Estimate the sum. Round each number to the nearest whole number, then add. $\newline$ $1\frac{3}{7}$ $+$ $7\frac{8}{9}$ $\newline$ The sum is approximately _____.

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Estimate sums and differences of mixed numbers

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Q. Estimate the sum. Round each number to the nearest whole number, then add.

\newline

1\frac{3}{7}

+

7\frac{8}{9}

\newline

The sum is approximately _____.

Round Numbers: Step $1$ : Round each number to the nearest whole number. $\newline$ $1\frac{3}{7}$ rounds to $1$ because $\frac{3}{7}$ is less than half. $\newline$ $7\frac{8}{9}$ rounds to $8$ because $\frac{8}{9}$ is more than half.
Add Rounded Numbers: Step $2$ : Add the rounded numbers. $\newline$ $1 + 8 = 9$

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