How to Divide by 100
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When you need to divide a number by , there’s a great trick you can use!
Rule
When you divide a number by , you move the point in the number two places to the left.
There are three special cases you’ll come across:
- 1.
- If the number is not a decimal number, remember that there is always an invisible point behind the last digit. Then you can move that point two places to the left.
- 2.
- If the number ends in a , moving the point past that makes the disappear.
- 3.
- If you have to move the point past all the digits of the number, you get empty places at the start of the number that you fill up with .
You’ll use the rule in the box below a lot moving forward. Make sure you understand what it says. Below the box there will be some examples.
Rule
Dividing by is the same as multiplying by :
The trick of moving the decimal point when dividing by 100, is similar to a trick you can use when multiplying by 100.
Example 1
Dividing by 100
- a)
- b)
- c)
- d)
Example 2
Multiplying by
- a)
- b)
- c)
- d)
