Find the product using suitable properties: |
(a) \[738\,\,\times \,\,103\] |
(b) \[854\,\,\times \,\,102\] |
(c) \[258\,\,\times \,\,1008\] |
(d) \[1005\,\,\times \,\,168\] |
Answer:
(a) \[738\times 103=738\times (100+3)\] \[=(738\times 100)+(738\times 3)\] \[=73800+2214\] \[=76014\] (b) \[854\times 102=854\times (100+2)\] \[=(854\times 100)+(854\times 2)\] \[=85400+1708\] \[=87108\] (c) \[258\times 1008=258\times (1000+8)\] \[=(258\times 1000)+(258\times 8)\] \[=258000+2064\] \[=260064\] (d) \[1005\times 168=(1000+5)\times 168\] \[=(1000\times 168)+(5\times 168)\] \[=168000+840\]. \[=168840\]
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