Square root
Square root – The square root of a number is the value that is multiplied by itself to give you that number.
(i.e. the root of the number)
The square root has a symbol that is shaped like a tick.
√ This is the symbol of the square root which looks like a tick.
To remind you that the symbol of a square root is a tick, see below:
To help you remember what the square root of a number is think of a ROOT OF A TREE covered in ticks (bugs) (see below).
Examples
What is the square root of 9?
We know the tree is 9 but what is its ROOT?
The root of 9 is 3 (3×3=9)
NOTE:
The square root has a symbol, a sort of tick with a line.
√9=3
We say the square root of 9 equals 3.
Here are the first 10 square roots of numbers up to 100:
|
√1 |
= |
1 |
|
√4 |
= |
2 |
|
√9 |
= |
3 |
|
√16 |
= |
4 |
|
√25 |
= |
5 |
|
√36 |
= |
6 |
|
√49 |
= |
7 |
|
√64 |
= |
8 |
|
√81 |
= |
9 |
|
√100 |
= |
10 |
NOTE:
These should be easy because if you see the section on multiplication tables it is imperative that a child should know all numbers up to 12 multiplied by themselves.
