Carry Out Calculations Using Square Numbers

For this activity, it will be useful for you to know the square numbers off by heart.

1² = 1

2² = 4

3² = 9

4² = 16

5² = 25

6² = 36

7² = 49

8² = 64

9² = 81

10² = 100

11² = 121

12² = 144

It's also useful to know that 15² = 225

Example

Work out the following mentally:

5² + 10 = 25 + 10 = 35

The order in which we carry out calculations matters, so it will help if you can remember the order of BIDMAS: 

Brackets

Indices or Powers

Division

Multiplication

Addition

Subtraction

We will be doing a variety of calculations involving square numbers, so time to get your brain in gear!