When multiplying a WHOLE number by a power of ten, write the same number of zeros (0) after the number as the power, eg:
123 x 102 = 12300 (two 0s as the power is 2)
123 x 106 = 123000000 (six 0s as the power is 6)
If the power of 10 is written in full (eg 102 = 100), write the same number of zeros after the number as in the power of 10, eg:
123 x 100 = 12300
123 x 1000000 = 123000000
NOTE:
It is better to not think in terms of adding zeros, but to think in terms of moving (or jumping) the decimal point (over digits).
For a whole number, the decimal point is "hiding"* after the last digit. When multiplying by a power of 10, the decimal point is jumped the power (or number of zeros in the power of 10) digits to the right; if there are no digits to the right of the decimal point when it needs to jump, a zero is placed after the decimal point so that it can then jump over that zero.
*the decimal point is "hiding" as it is not normally written if there are no non-zero digits after it.
Apart from using a calculator, specifically if you multiply a whole number by a power of 10:* To multiply a whole number by 10, add a zero to the whole number. * To multiply a whole number by 100, add two zeros to the whole number. * Etc.
You multiply the whole number as many times as the exponent is.
The whole number that you can multiply by to get 15 is 15.
Keep the same denominator, and multiply the numerator by the whole number.
Multiply the divisor by a power of 10 to make it a whole number.
The number of 0s in the product is equal to the sum of the number of 0s in the whole number that you started with and the power [of ten].
Apart from using a calculator, specifically if you multiply a whole number by a power of 10:* To multiply a whole number by 10, add a zero to the whole number. * To multiply a whole number by 100, add two zeros to the whole number. * Etc.
You multiply the whole number as many times as the exponent is.
To express .20 as a whole number, you would multiply it by 100 to shift the decimal two places to the right. This would give you 20 as a whole number. Converting a decimal to a whole number involves removing the decimal point by multiplying the decimal by the appropriate power of 10.
The whole number that you can multiply by to get 15 is 15.
Keep the same denominator, and multiply the numerator by the whole number.
Multiply the whole number to 100%.
Multiply the divisor by a power of 10 to make it a whole number.
The question is ambiguous. Do you want to know how to multiply a fraction by a whole number, as well as by a mixed number? Or are you asking how to multiply a whole number by a mixed number and express the product as a fraction? Or what?
Multiply the numerator and the whole number. Put the total over the denominator. Simplify if possible.
You add as many zeros to the number as you have in the power of 10.
No.