Question

Find thevalue of the following:

(a) 297 ×17 + 297 × 3 (b) 54279 ×92 + 8 × 54279

(c) 81265× 169 − 81265 ×69 (d) 3845 × 5 ×782 + 769 × 25 ×218

Answer 1

(a) 297 ×17 + 297 × 3 = 297 × (17 + 3)

= 297 × 20 = 5940

(b) 54279× 92 + 8 × 54279 = 54279 × 92 + 54279 × 8

= 54279 × (92 + 8)

= 54279 × 100 = 5427900

(c) 81265× 169 − 81265 × 69 = 81265 × (169 − 69)

= 81265 × 100 = 8126500

(d) 3845 ×5 × 782 + 769 × 25 × 218

= 3845 × 5 × 782 + 769 × 5 × 5 × 218

= 3845 × 5 × 782 + 3845 × 5 × 218

= 3845 × 5 × (782 + 218)

= 19225 × 1000 = 19225000