SQUARES AND SQUARE ROOTS OF NUMBERS (1- digit and 2 – digit numbers)
| Example: 1: find 22 = 4 2
=( 2 x 2) + ( 4 x 4) = 4 + 16 = 20 |
Example 2: find 42 – 22
= (4×4) – (2 x 2) = 16 – 4 = 12 |
| Example 3: find 32 + 32
= (3 x 3) + (3 x 3) = 9 + 9 = 18 |
Example 4: 102 – 42
= (10 x 10) – (4 x 4) = 100 – 16 = 84 |
Exercise 1
Find the value of:
- 42 + 62
- 52 – 22
- 52 + 72
- 102 – 52
- 82 + 102
- 82 – 62
- 22 x 52
- 32 x 42
- 42 x 32
- 52 x 22
- 62 x22
- 22 x 32 x 52
- 22 x 32 x 52
- 32 x 22 x 52
See also