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Question
Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens):
6375 - 2875
Sum
Solution
Rounding off to the nearest hundreds
6375 - 2875 = 6400 - 2900
= 3500
Rounding off to the nearest tens
6375 - 2875 = 6380 - 2880
= 3500
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