Question: Estimate the sum or difference by rounding each number to the nearest hundred. 1. 4050 ...3133 + 1220 2. 1989 - 1870 3. 799 ...1655

Estimate the sum or difference by rounding each number to the nearest hundred.

1. 4050

...3133

+ 1220

2. 1989

- 1870

3. 799

...1655

+ 271

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