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25乘75加26乘25减25的简便计算

25*75+26*25-25 =25*75+25*(26-1) =25*75+25*25 =25*(25+75) =25*100 =2500

74×26+75×74-74 =74×(26+75-1) =74×100 =7400

125×78-37+25×26 =375×26-37+25×26 =(375+25)×26-37 =400×26-37 =10400-37 =10363

简便计算: 75x43+43x26-43 =75x43+43x26-43x1 =43x(75+26-1) =43x100 =4300

75乘26的积加上26乘25的积,和是多少 解: 75×26+26×25 =(75+25)×26 =100×26 =2600 答:和是2600

75×43+43×26-43 =75×43+43×26-43×1 =43×(75+26-1) =43×100 =4300

438乘75加438乘26减438的简便计算 =438×(75+26-1) =438×100 =43800

25+75=100 26+74=100 25到75一共有51个数 所以有25对这样的组合加最中间的一个数50 所以结果是25×100+50=2550

73x26+28x26-26 =(73+28-1)x26 =100x26 =2600

25乘17加26乘23怎么做(四年级 简便方法 25乘17加26乘23 =25*(17+23)+23 =25*40+213 =1023

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