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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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A number exceeds 37684955 by 3615045. What is that number?
The total population of a city is 28756304. If the number of males is 16987059, find the number of females in the city.
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Estimate each sum to the nearest ten: (356 + 275)
Estimate each difference to the nearest hundred: (678 − 215)
Estimate each difference to the nearest thousand: (35863 − 27677)
Give a rough estimate (by rounding off to nearest hundreds) and also a closer estimate (by rounding off to nearest tens):
8325 - 491
Estimate the following using the general rules:
6400 - 4900
Estimate the following using the general rules:
11,804 – 1,888
Estimate the following using the general rules:
980 – 688
