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75×4+4×25=(75+25)×4应用的是(  )
分析:75×4+4×25=(75+25)×4就是两个数与同一个数相乘,等于这两个数相加后再与第三个数相乘,是乘法分配律的反用.
解答:解:75×4+4×25=(75+25)×4是乘法分配律的反用.
故选:B.
点评:乘法分配律用字母表示就是:(a+b)×c=a×c+b×c,反过来也成立.
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科目:小学数学 来源: 题型:

180÷60= 12×25= 0÷90=
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3.3×2=2.4×0.5=0.6×0.9=0.2×0.3=
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科目:小学数学 来源: 题型:解答题

180÷60=12×25=0÷90=
4×5÷4×5=0.25×4+4=131+218+269+182=
25×6×4=420÷35=36×5×4=
120÷5÷3=198-75-25=120-20÷5=
59亿-58亿=(1.3+3.5)÷0.6=75÷2.5=
0.45÷1.25÷8=2.5×7.6×4=97.6÷0.02=
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720÷8÷9=2.9+5.7+2.1=2-0.16-0.64=
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0.36+0.64=64.32÷16=72.8÷0.8=
8.4×0.2+1.6×0.2=8.4÷4.2=0.05×0.8=
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