2.5*1.25*0.32简便
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/05 20:43:05
1.25×32×2.5=1.25×8×4×2.5=(1.25×8)×(4×2.5)=10×10=100
1.25×2.5×32=(1.25×8)×(2.5×4)=10×10=1000.25×16.2×4=0.25×4×16.2=1×16.2=16.20.35×1.25×2×0.8=(0.35×2)×(1
(2.5*0.4)*(0.8*12.5)=1*10=10
3.78*2.5/1.25*0.4/8=3.78*(2.5*0.4)/(1.25*8)=3.78*1/10=0.378
3.6*1.25-2.5*1.25=1.25x(3.6-2.5)=1.25x1.1=1.25x(1+0.1)=1.25x1+1.25x0.1=1.25+0.125=1.375
=4x0.25x1.25x0.08=1x0.01=0.01再问:你确定是对的吗
=(12.5×0.8)×(2.5×0.4)=10×1=1088×125=11×(8×125)=11×1000=11000
提取1.251.25*(6.66+2*33)不懂就问哈再问:2.2×0.25+0.5×1.1的简便运算
2.5*1.25*0.32=2.5*1.25*0.4*0.8=2.5*0.4*1.25*0.8=1*1=1
8.8*1.25+10.4*2.5=8*1.25*1.1+(10+0.4)*2.5=11+25+1=37
0.8×4×1.25×2.5=(0.8*1.25)*(2.5*4)=1*10=10
2.5×0.32×1.25=(1.25×0.8)×(2.5×0.4)=1×1=1
0.032×2.5×1.25=0.4×2.5×0.08×1.25=1×0.1=0.1
6.4*2.5*1.25=1.6*4*2.5*1.25=1.6*10*1.25=16*1.25=4*4*1.25=4*5=20
3.64÷1.25÷0.32=3.64÷(1.25x0.32)=3.64÷(1.25x0.8x0.4)=3.64÷(1x0.4)=3.64÷0.4=9.1
2.5×1.25×0.32=2.5×1.25×0.4×0.8=(2.5×0.4)×(1.25×0.8)=1×1=1
根据乘法交换律,把0.32拆开来,就有(2.5*0.4)*(0.8*1.25)=1*1=1
1.25*0.32*250=1.25*0.8*0.4*250=1*100=100
(6+0.4)*2.5=16,然后16*(1+0.25)=20