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4.86x0.35x0.2的简便方法

0.35X5X0.21=5X0.5X0.7X0.21=2.5X0.147=0.147X10÷4=1.47÷4=0.3675

原式=0.35X0.2X0.9=0.07X0.9=0.063

(1) 4.08x0.25=4x0.25+0.08x0.25=1+0.02=1.02(2) 490x0.35 =500x0.35-10x0.35=175-3.5=171.5

0.35*18*0.2=(0.35*0.2)*18=0.07*18=1.26你好,本题已解答,如果满意请点右上角“采纳答案”.

0.4375x-0.35=0.2x0.8x=0.35x=0.4375

7.25x0.35+72.5x0.025的简便计算=7.25x0.35+7.25x0.25=7.25x(0.35+0.25)=7.25x0.6=4.35

50X0.46X0.2=(50x0.2)x0.46=10x0.46=4.6

0.35x9.12 0.35x0.88用简便方法0.35x9.12 0.35x0.88=0.35*(9.12+0.88)=0.35*10=3.5

解,4.72x0.8+4.72x0.2 =4.72x(0.8+0.2) =4.72

0.5x15.8x0.2 =0.5x0.2x15.8 =0.1x15.8 =1.58

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