四年级(117+43)×(84÷7)简便计算
3个回答
展开全部
(117+43)x(84÷7)
=160x12
=(100+60)x12
=100x12+60x12
=1200+720
=1920
=160x12
=(100+60)x12
=100x12+60x12
=1200+720
=1920
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展开全部
(1)(117+43)×(84÷7)
=160x12
=(100+60)x12
=100x12+60x12
=1200+720
=1920
(2)(117+43)×(84÷7)
=160x12
=160x(10+2)
=160x10+2x160
=1600+320
=1920
=160x12
=(100+60)x12
=100x12+60x12
=1200+720
=1920
(2)(117+43)×(84÷7)
=160x12
=160x(10+2)
=160x10+2x160
=1600+320
=1920
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