Question

Determine each of the following products by suitable rearrangements:

(i) 2 × 1497 × 50

(ii) 4 × 358 × 25

(iii) 495 × 625 × 16

(iv) 625 × 20 × 8 × 50

Answer 1

(i) 2 × 1497 × 50
= (2 × 50) × 1497 = 100 × 1497 = 149700

(ii) 4 × 358 × 25
= (4 × 25) × 358 = 100 × 358 = 35800

(iii) 495 × 625 × 16
= (625 × 16) × 495 = 10000 × 495 = 4950000

(iv) 625 × 20 × 8 × 50
= (625 × 8) × (20 × 50) = 5000 × 1000 = 5000000