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Question
Estimate the following numbers to nearest tens and then add or subtract.
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Solution
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Estimate each sum to the nearest ten: (86 + 19)
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Estimate each sum to the nearest hundred: (170 + 395)
Estimate each sum to the nearest thousand: (46703 + 11375)
Estimate each sum to the nearest thousand: There are 54 balls in box A and 79 balls in box B. Estimate the total number of balls in both the boxes taken together.
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Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens):
1,08,734 - 47,599
Estimate the following using the general rules:
330 + 280
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11,804 – 1,888
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