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75乘99的简便运算

75*99 =75*(100-1) =75*100-75 =7500-75 =7425

75*99=75*(100-1)=75*100-75*1=7500-75=7425

这才是最简便75X(100-1) =75X10075x1 =7425(望采纳)

99*75+7575*(99+1)=75*100=7500.请点击右下角的 [采纳答案] 谢谢.

75*99=75*(100-1)=7500 - 75=7425

75乘99加75用简便方法75*99+75=75*(99+1)=75*100=7500

简便计算75*99怎样计算75*99=75*100-75=7500-75=7425

100x75-75

75X99+75 =75X(99+1) =75X100 =7500

简便计算:43*17+47*17+91*83,5秒心算10秒脱式,挑战计算器

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