Page 182 - Mathematics_F1

Revision exercise 3

1. (a) 8.65 (d) 31.78
(b) 1.05 (e) 19.67
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(c) 0.34 (f) 0.45 Tanzania Institute of Education
3. (a) 5,000,000
(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 mg
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

25/09/2025 15:02:09
Mathematics form 1.indd 175
Mathematics form 1.indd 175 25/09/2025 15:02:09