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99 plus 9/9 = 100
(9*9)+(9+9)+(9/9) = 100
Five 9s:(99 x 9 + 9) / 9 = 100
Take two 9s and make them a fraction like this 9/9. Then put the other two 9s together to make 99 and you get 9/9+99=100. Because 9/9=1 so it becomes 1+99=100.
Eleven.
20
11
wait not the discription srry
11 with 1 remaining 100 - 1 = 99 = 9 x 11
6 of them with a remainder of 4
72
The GCF of 9s and 63s^3 is 9s.