Find the product using suitable properties :
a) 745 × 102
b) 258 × 1005
c) 1002 × 168
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use only properties of whole number
Answers
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Answer:
a)15990
b)27090
c)168336
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Answered by
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Answer:
738 × 103
= 738 × (100 + 3)
= 738 × 100 + 738 × 3
= 73800 + 2214
= 76014
(b) 854 × 102
= 854 × (100 + 2)
= 854 × 100 + 854 × 2
= 85400 + 1708
= 87108
(c) 258 × 1008
= 258 × (1000 + 8)
= 258 × 1000 + 258 × 8
= 258000 + 2064
= 260064
(d) 1005 × 168
= (1000 + 5) × 168
= 1000 × 168 + 5 × 168
= 168000 + 840
= 168840
Step-by-step explanation:
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