1.

Find the product using suitable properties.a. 738 × 103b. 854 × 102c. 258 × 1008d. 1005 × 168

Answer»

a. 738 × 103

= 738 × (100 + 3)

= 738 × 100 + 738 × 3 (Distributive property)

= 73800 + 2214 = 76014

b. 854 × 102

= 854 × (100 + 2)

854 × 100 + 854 × 2 (Distributive property)

= 85400 + 1708 = 87108

c. 258 × 1008

= 258 × ( 1000 + 8)

= 258 × 1000 + 258 × 8 (Distributive property )

= 258000 + 2064 = 260064

d. 1005 × 168 = (1000 + 5) × 168

= 1000 × 168 + 5 × 168 (Distributive property )

= 168000 + 840 = 168840



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