# How to Multiply by 10

When you multiply a number by 10, there’s a super easy trick you can use!

Rule

When you multiply a number by $10$, move the point in the number one place to the right.

Bootcamps

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There’s a special case you may come across: If the number you’re multiplying by $10$ isn’t a decimal number. In that case, there is always an invisible point behind the last digit. By moving the point one place to the right, you get a free place. You can fill this place with the digit $0$.

The trick of moving the decimal point when multiplying by 10, is similar to a trick you can use when dividing by 10.

Example 1

### Multiplying By 10

a)
 $61\cdot 10=610$
b)
 $\text{}763.4\text{}\cdot 10=\text{}7634\text{}$
c)
 $20\cdot 10=200$
d)
 $\text{}0.4\text{}\cdot 10=4$
e)
 $65\cdot 10=650$
f)
 $\text{}36.98\text{}\cdot 10=\text{}369.8\text{}$
g)
 $71\cdot 10=710$
h)
 $\text{}0.04\text{}\cdot 10=\text{}0.4\text{}$