Maths Class 1 Number Sense (2-Digit Numbers)

Asked by VARADH PRAGHOSH · START RIGHT SCHOOL

What is 99×9

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Answer: C. 891

Imagine 81 normally and put a 81 in the back and add 1 to 8 so in the middle it becomes 9. 1 is in the front and 8 is in the back and so it becomes the answer.

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