Division
It helps to know your times tables! Click on the times tables picture.
Dividing by 10
A decimal point comes after a whole number e.g. 2.1 - the number two is a whole number.
Move the decimal point one place to the left.
Example 1
2 ÷ 10 = ?
| Before | ||||
|---|---|---|---|---|
| Th | H | T | U | 1/10 |
| 2 | ||||
| After | ||||
|---|---|---|---|---|
| Th | H | T | U | 1/10 |
| 2 | ||||
Answer= 0.2
Example 2
30 ÷ 10 = ?
| Before | Th | H | T | U | 1/10 |
|---|---|---|---|---|
| 3 | 0 | |||
| After | Th | H | T | U | 1/10 |
|---|---|---|---|---|
| 3 | 0 | |||
Answer= 3
Dividing by 100
Move the decimal point two places to the left.
Example 1
750 ÷ 100 = ?
| Before | |||||
|---|---|---|---|---|---|
| Th | H | T | U | 1/10 | 1/100 |
| 7 | 5 | 0 | |||
| After | |||||
|---|---|---|---|---|---|
| Th | H | T | U | 1/10 | 1/100 |
| 7 | 5 | 0 | |||
Answer= 7.5
Dividing by 1000
Move the decimal point three places to the left.
4000 ÷ 1000 = ?
| Before | ||||||
|---|---|---|---|---|---|---|
| Th | H | T | U | 1/10 | 1/100 | 1/1000 |
| 4 | 0 | 0 | 0 | |||
| After | ||||||
|---|---|---|---|---|---|---|
| Th | H | T | U | 1/10 | 1/100 | 1/1000 |
| 4 | 0 | 0 | 0 | |||
Answer= 4
Dividing Numbers
If you know your times tables the following divisions will be easy for you to calculate:
Example 1
42 ÷ 7 = ?
We know 6 x 7 = 42.
Therefore 42 ÷ 7 = 6.
Example 2
32 ÷ 8 = ?
We know 4 x 8 = 32.
Therefore 32 ÷ 8 = 4.
Example 3
25 ÷ 5 = ?
We know 5 x 5 = 25.
Therefore 25 ÷ 5 = 5.
Graphical Items
Let's have a look at graphical items.
Example 1
If you have nine balls and three people. How many balls would
each person have?
Example 2
If you have 4 presents and two people. How many presents would each person have?
Division with Remainders
In division you have one or more remainders left.
Example 1
42 ÷ 3 = ?
- 4 ÷ 3 = 1 plus 1 remainder
- Carry the remainder 1.
- 12 ÷ 3 = 4
Answer:14
Example 2
95 ÷ 5= ?
- 9 ÷ 5 = 1 plus 4 remainders
- Carry the 4 remainders.
- 45 ÷ 5 = 9
Answer:19
You could use the long division method to calculate your answer.
Example 3
66 ÷ 12 = ?
- You know 12 x 5= 60 so 66 ÷ 12 = 5 plus 6 remainders.
- Add a decimal point after the 5.
- After the 6 remainders add a 0.
- 60 ÷ 12 = 5
Answer: 5.5
VIDEO
Have a look at the demonstration on the video to enhance your learning.
