Question

Using the properties of whole numbers, find the value of the following in suitable way:
(a) 1834 × 101
(b) 40 × 328 × 25

Answer 1

Step-by-step explanation:

(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

Answer 2

Answer:

Answered (b) sum down

Step-by-step explanation:

(b) 40 x 328 x 25.

=  328 x 25 x 40

=  328 x 1000

=  328000