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Multiply 63 by 10 is 630
0.0001 Multiply the above by 10, you get 0.001, now multiply 0.001 by 10 and you get 0.01, now multiply 0.01 by 10 and you get 0.1, now multiply 0.1 by 10 and you get 1 So to get from 0.0001 to 1, you had to multiply it by 10 4 times, that is you had to multiply 0.0001 by 10000 to get 1, but if you multiply a number by 10000, you have to divide it also by the same number to retain the original value Hence 0.0001 is the same as 1/10000
1210, what you do is multiply 11x11 which equals 121 and then multiply that by 10 to get your answer
to multiply a number by 10, all you have to do is add zeros at the end of the number. Below are examples: 10*1=10 10*10=100 10*100=1000
* Multiply by 10 (by addind a zero to the right of the number), * then double: Example - multiply 52 by 20: 52 x 10 = 520 double 520 = 1040