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37x98 74运算定律

=37x98+37x2=37x(98+2)=37x100=3700

37X98=37X(100-2)=37X100-37X2=3700-74=3626

37x98=37x(100-2)=37x100-37x2=3700-74=3626 上面的结果全错,不信你自己试试看.

37X98=37X100-37X2=3700-74=3626

37*(100-2)=3700-74=3626

解:37*98=37*(100-2)=3700-74=3626

98乘75=(100-2)*75=100*75-2*75=7500-150=7350

98x75=(100-2)x75=100x75-2x75=7500-150=7350祝学习进步,望采纳,不懂的欢迎追问

37x99用简便方法计算37x99=37*(100-1)=37*100-37=3700-37=3663

74x98+74+74=74x98+74x1+74x1 运用乘法分配律=(98+1+1)x74=100x74=7400 祝学习进步.

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