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3.5x97+0.38x35,,,,,,,怎么简便就怎样算!...

35+35+35+35x97 =35x(1+1+1+97) =35x100 =3500

35+35+35+35x97 =35×1+35×1+35×1+35x97 =35×(1+1+1+97) =35×(2+1+97) =35×(3+97) =35×100 =3500

2.97×35 =(3-0.03)×35 =3×35-0.03×35 =105-1.35 =104.65

简便方法计算如下: 35十35十35十35X97 =35X1+35X1+35X1+35X97 =35X(1+1+1+97) =35X100 =3500

25x97+35x3 =25x97+(25+10)x3 =25x97+25x3+10x3 =25x(97+3)+30 =2500+30 =2530

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