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First, round 5126 to the nearest ten, which gives us 5130. Next, round 13788 to the nearest ten, resulting in 13790. Now, add the two rounded numbers: 5130 + 13790 equals 18920. Therefore, the estimated sum of 5126 plus 13788 is approximately 18920.

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Q: Estimate 5126 plus 13788 by first rounding each number to nearest 10?
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