Links to other Year 8 Revision exercises - Ex 2.1 | Ex 2.2 | Ex 2.3 | Ex 2.4 | Ex 3.1 | Ex 3.3 | Ex 3.4 | Ex 3.5
These answers are given merely to help with revision. In order to get full marks all working out must be shown.
| 1 | a) | 472 | |
| b) | 64 | ||
| c) | 1.44 | ||
| 2 | a) | 28 | |
| b) | 1017 | ||
| c) | 22 | ||
| 3 | a) | 1 ⁄ 9 | |
| b) | 1 ⁄ 12 | ||
| c) | 0.059 | ||
| d) | 72300 | ||
| e) | 1 ⁄ 16 | ||
| f) | 1 ⁄ 125 | ||
| 4 | a) | i) | 55 |
| ii) | 4-7 | ||
| b) | i) | 4.2 × 105 | |
| ii) | 3.2 × 10-4 | ||
| 6 | a) | i) | 66 |
| ii) | 70 | ||
| iii) | 66 | ||
| b) | i) | 1.6 | |
| ii) | 7.5 | ||
| 7 | 0.8 | ||