# Multiplying by 10 and by 100

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Before continuing with multiplication it might be wise to review place value.

### Quick Place Value Review

Because we use a Base-10 number system, multiplying by 10 or 100 (or any multiple of 10) is fairly easy.

As the picture below shows, each place has a value 10 times that of the place immediately to the right

If necessary, review place value before proceeding with the multiplication methods below.

## Multiplying by 10

Multiply by 10 by moving the numbers one place to the left and adding one zero.
 H T O 4 3 x 1 0 = 4 3 0

## Multiplying by 100

Multiply by 100 by moving the numbers two places to the left and adding two zeros.
 T H T O 5 9 x 1 0 0 = 5 9 0 0

Quick Way: count the zeros and put them to right of the number being multiplied.
e.g. 34 x 100 = 3400

Try this multiplication worksheet generator. You can select to multiply by multiples of 10 or multiples of 100 and get limitless questions to print out and practice with.

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