Estimation

solve the question by using brackets
99*77

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Solution

9977=(100-1)77
use distributive law=77100-771
=7700-77
=7623

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Similar questions

7 + 77 + 777 + 7 \times 9 + 77 \times 99 + 777 \times 999

A)What least number should be added to 1056 so that the sum is completely divisible by 23?

B)how can you add it is to get the number 1000 question mark brackets brackets? Use only addition

99^{2}

99^{2}

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