www.5129.net > 4.05x0.25的简便算法

4.05x0.25的简便算法

原式=(1.11x4)x0.25=1.11x(4x0.25)=1.11x1=1.11 或者=4x0.25+0.4x0.25+0.04x0.25=1+0.1+0.01=1.11

4.44*0.25=(4+0.4+0.04)*0.25=4*0.25+0.4*0.25+0.04*0.25=1+0.1+0.01=1.114.44*0.25=4.44*1/4=1.11

4.08*0.25 =(4+0.08)*0.25 =0.25*4+0.25*0.08 =1*0.02 =0.02

4.44*0.25简便计算4.44*0.25=1.11*4*0.25=1.11*1=1.11

4.08*0.25=(4*1.02)*0.25=(1.02*4)*0.25=1.02*(4*0.25)=1.02

4.08x0.25=1.02x4x0.25=1.02x(4x0.25)=1.02x1=1.02

4.04*0.25=4*0.25+0.04*0.25=1+0.01=1.01

原式=0.36+0.64x0.25=0.36+(0.16x4)x0.25=0.36+0.16x(4x0.25)=0.36+0.16x1=0.36+0.16=0.52

(4十400)X0.25=4*0.25+400*0.25=1+100=101

4.44X0.25的简便运算是什么=1.11x4x0.25=1.11x1=1.11

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