Mental Maths Class 4 Addition and Subtraction

Asked by JOSEPH PREM ZURISHADDAI RAJ · THE CLASS OF ONE GLOBAL ONLINE SCHOOL

What is 9,90,662 - 800?

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Answer: A. 9,89,862

Taking away 800 is the same as taking away 1,000 and adding back 200. So 9,90,662 - 1,000 = 9,89,662, and 9,89,662 + 200 = 9,89,862.

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