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Earn +20 ptsQ: What is the Estimated sum of 644?
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What is the estimated sum of 7.09 minus 5.11?
1.98 is the sum
What can you say about your estimated sum when you decrease both addends when rounding to add?
The Answer will be lower the the actual sum
What is a good comparison of the estimated sum and the actual sum of 7 and 7 8ths plus 2 and 11 12ths?
The estimated sum is 11 The actual sum is 10 and 19/24
Which is a good comparison of the estimated sum and the actual sum of 7 and seven eighths plus 2 and eleven twelves?
The estimated sum is 11. The actual sum is 10 and 19/24
What is the estimated sum of 10985?
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