Page 181 - Mathematics

Revision exercise 3

1. (a) 8.65 (d) 31.78
(b) 1.05 (e) 19.67
(c) 0.34 (f) 0.45 Tanzania Institute of Education
3. (a) 5,00,000
(b) 5,268,000
(c) 5,267,900
5. (a) 86.5 (b) 86.46 (c) 90 (d) 86
7. (a) (i) 17.8 (ii) 17.1 (iii) 2.0 (iv) 0.0
(b) (i) 23.75 (ii) 23.08 (iii) 0.05 (iv) 0.08
9. (a) 0.69 (b) 0.95 (c) 0.09
11. (a) 35.00 (b) 35.0
15. (a) 8,700 m
(b) Tshs 86,000
(c) (i) 10,000 (ii) Tshs 40,000,000
17. 1.85 gm
19. (a) 240 m
21. (a) Tshs 7,000
(b) Tshs 270,000
(c) Tshs 360,000

Chapter Four

Exercise 4.1

1 (a). 2 :3 (h) 14 :5 (o) 1 000:1
(b) 4 :5 (i) 28:1 (p) 8: 7
(c) 2 :1 (j) 3:5 (q) 34:1
(d) 11:5 (k) 7: 4 (r) 5:9
(e) 4 :3 (l) 1: 4 (s) 3: 2
(f) 5: 3 (m) 17 :100 (t) 8: 7
(g) 16 :9 (n) 50:1
Mathematics Form One
3. 3:10 5. 15:12 :10 7. 36 oranges

175

25/10/2024 09:52:16
Mathematics form 1.indd 175 25/10/2024 09:52:16
Mathematics form 1.indd 175