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Question
Estimate the following by rounding off number to nearest tens:
78203 – 16407
Sum
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Solution
We have, 78203 – 16407
Rounded off 78203 to nearest tens = 78200
Rounded off 16407 to nearest tens = 16410
So, estimated difference = 78200 – 16410 = 61790
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Chapter 1: Number System - Exercise [Page 18]
