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you round to the nearest whole number if it's a decimal,or round to the greatest place.

Example:34+97=

34 rounds to 30,97 rounds to 100

30+100=130

EXAMPLE: 3.19+2.76=

3.19 rpunds to 3,and 2.76 rounds to 3

3+3=9

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15y ago
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Q: How do you estimate on math problems?
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