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Question
Estimate the difference of 10,512 and 21,340 by rounding off each number to its nearest thousand.
Estimate the difference of 10,512 and 21,340 by rounding off each number to its nearest thousand.
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Solution
The correct option is C 10,000
10,512 rounded off to nearest thousand gives 11,000 as hundreds digit is 5.
21,340 rounded off to nearest thousand gives 21,000 as hundreds digit 3 is less than 5.
So, the estimated difference
= 21,000 - 11,000 = 10,000
10,512 rounded off to nearest thousand gives 11,000 as hundreds digit is 5.
21,340 rounded off to nearest thousand gives 21,000 as hundreds digit 3 is less than 5.
So, the estimated difference
= 21,000 - 11,000 = 10,000
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