Page 35 - Start Up Mathematics_7

Example 7: Match the following product with the given figures:
3 1 2 1
(a) 2 × (b) 3 × (c) 3 × (d) 2 ×
5 2 3 4

(i) (ii)

(iii) (iv)

Solution: (a) (iv) (b) (ii) (c) (i) (d) (iii)
Example 8: Match the given figures with the following equalities involving product of a fraction
and a whole number.
1 3 1 2 2 2 2 1
(a) 3 × = (b) 2 × = (c) 3 × = 1 (d) 2 × = 1
5 5 3 3 4 4 3 3

(i) (ii)

(iii) (iv)
Solution: (a) (iv) (b) (i) (c) (ii) (d) (iii)
Example 9: Multiply and reduce to lowest form:

5
(a) 4 × 2 (b) 2 × 5 (c) × 6 (d) 30 × 2
3 3 2 5
2 8 2 2 10 1
Solution: (a) 4 × = = 2 (b) × 5 = 3 = 3
3
3
3
3
3
5 30 2 60
(c) × 6 = = 15 (d) 30 × = = 12
2 2 5 5
Example 10: Shade:
4
(a) 1 of the circles in (i) (b) of the kites in (ii)
2
5

(i) (ii)

27