KS3 + KS4 Revision

Number Exercises

Calculate these;

1. 45 x 6
2. 56.7 + 67.8
3. 456 x 0.1
4. 78.9 + 4.84
5. 0.3 x 0.8
6. 4 x 76
7. 409.8 + 69.7
8. 4.5 x 0.1
9. 23.6 x 127.9
10. (0.5)²
11. 438 / 6
12. 64.6 – 28.8
13. 843 / 0.1
14. 414 – 99.7
15. 0.9 / 0.3

Simplify these, and give each answer as a decimal number;

1. 4/5
2. 3/8 of 56
3. 2/9 of 8.1
4. 2/5
5. 4/7 of 49
6. 2/7 of 8.4
7. 42/5
8. 3/20
9. 23/5
10. 3/40

Algebra Exercises

Simplify these;

1. 2x +3x
2. 2r x 3
3. 3y x 4y
4. 7y + y
5. 4 x 2x
6. 5y x 5y
7. 6x - 4x
8. 6x / 3
9. 3y –y
10. 8y /4

Solve these for x;

1.      11 = x + 2

2.      13 = x – 12

3.      20/x = 5

4.      3 + x = 19

5.      x – 9 = 9

6.      3 = 39/x

7.      x/2 = 13

8.      4x = 68

9.      36 = x/2