Page 180 - Mathematics

Chapter Three

Exercise 3.1

1. (a) 8,000 (b) 12,000 (c) 14,000 (d) 101,000 (e) 18,000
(f) 2,350,000 (g) 60,000 (h) 10,000 (i) 1,235,000
3. (a) 30 (b) 20 (c) 30 (d) 10
(e) 50 (f) 30 (g) 20 (h) 310
5. 237,000 pupils
7. (a) 157.9 (b) 10.0 (c) 0.3 (d) 294.5
9. (a) 688.9341 (b) (i) 688.93 (ii) 688.9 (iii) 700
Tanzania Institute of Education
11. (a) 12,000 m (b) 38.3 m

Exercise 3.2

1. (a) 4 000.0 (b) 19.9 (c) 0.008
(d) 25.3545 (e) 0.0100 (f) 10.010
3. (a) 0.08 (b) 5.07 (c) 1.70 (d) 0.72
(e) 12.05 (f) 3.35 (g) 3.61 (h) 0.01 (i) 72.79
5. (a) 3.1 (b) 0.7 (c) 250.7
(d) 0.1 (e) 0.7 (f) 10.4
7. 18.03
9. (a) 0.0028 (b) 20.04 (c) 0.172
(d) 6.010 (e) 2.1
11. 9.860 m 2

Exercise 3.3

1. (a) 5 (b) 10 (c) 3 (d) 8
(e) 8 (f) 3 (g) 7 (h) 5
3. (a) 1.923 (b) 0.714
(a) 0.612 (b) 100 (c) 35.51 (d) 7.44 (e) 16.6
5.
Mathematics Form One 7. (a) 12.78 (b) 320 (c) 0.00714 (d) 37.20 (e) 40
(f) 493.0

(f) 399.6
(a) 20,000 (b) 25,000
9.
(b) 25,000 will be reported because it is the nearest value to the
actual value 24,582

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25/10/2024 09:52:15
Mathematics form 1.indd 174
Mathematics form 1.indd 174 25/10/2024 09:52:15