# Multiplying by 10

This chapter explores how to multiply by 10. This is a very simple chapter and you’ll find that multiplying by 10 is very simple.
Suppose we wanted to multiply 2 by 10. First we would arrange the numbers like the following.
First we multiply 2 by zero and get;
…and then multiply 2 by 1 as shown below.
Above we see that when you multiply 10 by 2 the answer is 10.
Suppose we wanted to multiply 66 by 10. First we would arrange the numbers like the following.
First we multiply 0 by 6 to get 0.
Then multiply 6 by the other zero as shown below;
In the next column we place an extra zero as shown below.
Then we multiply 1 by 6 as shown below.
Then we multiply 1 by the other 6 and get 6 as shown below.
As we see above when you multiply 66 by 10 you get 660.

## Dividing

Dividing is the opposite of multiplying. Suppose we wanted to divide 640 by 10. When dividing by 10 you simply count one decimal place in the number to be divided by for example; …or you could simply cancel when you have zero at the end. That gives 64. So; 640 divided by 10 is 64.
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