Find 15 x 68; 17 x 23;
69 x 78 + 22 x 69 using
distributive property.
Answers
Answered by
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Step-by-step explanation:
15×68
=(10+5)×(70-2)
=10(70-2)+5(70-2)
=700-20+350-10
=680+340
=1020
=17×23
=(10+7)×(20+3)
=10(20+3)+7(20+3)
=200+60+140+21
=391
=69(1×78+1×22(
69(78+22)
69(100)
6900
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