To estimate the sum or difference, we can round each number to the nearest hundred and then perform the arithmetic operation.
We start by rounding each number to the nearest hundred:
Next, we estimate the sum of 562 562 562 and 814 814 814 by adding their rounded values: 600+800=1400 600 + 800 = 1400 600+800=1400
Then, we estimate the difference between 937 937 937 and 486 486 486 by subtracting their rounded values: 900−500=400 900 - 500 = 400 900−500=400
The estimated sum is: 1400 \boxed{1400} 1400 The estimated difference is: 400 \boxed{400} 400
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