
150×12的两种简便运算的算式?
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150×12 150×12 150×12
=150x2x6 =150x(10+2) =(100+50)x12
=300x6 =150x10+150x2 (乘法分配率) =100x12+50x12
=1800 =1500+300 =1200+600
=1800 =1800
=150x2x6 =150x(10+2) =(100+50)x12
=300x6 =150x10+150x2 (乘法分配率) =100x12+50x12
=1800 =1500+300 =1200+600
=1800 =1800
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