Workout
Question 1
(a) 3 (b)5 (c) 10 (d) 2 (e) 6 (f) 8
(g) 4 (h) 9 (i) 12 (j) 11 (k) 1 (l) 0
Question 2
(a) 9 (b) 15 (c) 20 (d) 1
Question 3
(a) 18 (b) 38 (c) 29 (d) 65
(e) 146 (f) 808 (g) 5.4 (h) 7.3
(i) 0.4 (j) 14.7 (k) 11.1 (l) 3.62
Question 4
(a) 4 and 5 (b) 9 and 10 (c) 2 and 3
(d) 6 and 7 (e) 11 and 12 (f) 15 and 16
Question 5
(a) 7.4 – 7.6 (b) 3.1 – 3.3 (c) 9.6 – 9.8
(d) 7.8 – 8.0 (e) 12.1 – 12.3 (f) 9.2 – 9.4
Question 6
(a) 7.5 (b) 3.2 (c) 9.7 (d) 7.9 (e) 12.2 (f) 9.3
Apply
Question 1: 5
Question 2: 60cm
Question 3: √841 = 29
Question 4: (a) should be 4 (b) should be 10
Question 5: x = 8
Question 6: (a) 1936 (age 44 in 1980) (b) No, he would be too young