5.5乘0.66加6.6乘0.55 简便算法是什么

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5.5乘0.66加6.6乘0.55 简便算法是什么
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5.5乘0.66加6.6乘0.55 简便算法是什么
5.5乘0.66加6.6乘0.55 简便算法是什么

5.5乘0.66加6.6乘0.55 简便算法是什么
5.5*0.66+6.6*0.55
=0.55*6.6+6.6*0.55
=6.6*(0.55+0.55)
=6.6*1.1
=6.6*(1+0.1)
=6.6*1+6.6*0.1
=6.6+0.66
=7.26

1.1*5*1.1*0.6+1.1*6*1.1*.5=(1.1*1.1)*(5*0.6+6*0.5)=1.21*6=7.26

5.5*0.66+6.6*0.55
=1.1*（3.3+3.3）
=1.1*6.6
=7.21

5.5×0.66＋6.6×0.55……变一变，就简便
=5.5×0.66＋0.66×5.5
=5.5×0.66×2
=5.5×2×0.66
=11×0.66
=（10＋1）×0.66
=0.66×10＋0.66
=6.6＋0.66
=7.26

((0.66*5.5+0.55*6.6)*10)/10 =(6.6*5.5*2)/10 =(6.6*5.5)/5 =6.6*1.1=7.26

5.5*0.66+6.6*0.55
=0.55*6.6+6.6*0.55
=6.6*(0.55+0.55)
=6.6*1.1
=6.6*(1+0.1)
=6.6*1+6.6*0.1
=6.6+0.66
=7.26

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