Mental Maths Class 4 Addition and Subtraction

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

What is 9999 - 777?

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Answer: A. 9222

Subtract column by column: ones 9 - 7 = 2, tens 9 - 7 = 2, hundreds 9 - 7 = 2, thousands 9 - 0 = 9. So 9999 - 777 = 9222.

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