This activity is about square numbers.
Remember that to square a number, you simply multiply it by itself.
So 52 = 5 x 5 = 25
You should know the first few square numbers off by heart.
1, 4, 9, 16, 25, 36, 49,, 64, 81, 100, 121, 144
Example
Work the following out in your head.
42 + 32
Answer
16 + 9 = 25
42 + 32 = 25
Let's have a go at some questions now.