45.6*6.7+4.56*31+0.46*20的简便运算
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45.6*6.7+4.56*31+0.46*20的简便运算
![45.6*6.7+4.56*31+0.46*20的简便运算](/uploads/image/z/3729387-3-7.jpg?t=45.6%2A6.7%2B4.56%2A31%2B0.46%2A20%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
45.6*6.7+4.56*31+0.456*20
=45.6*6.7+45.6*3.1+45.6*0.2
=45.6*(6.7+3.1+0.2)
=45.6*10
=456
=45.6*6.7+45.6*3.1+45.6*0.2
=45.6*(6.7+3.1+0.2)
=45.6*10
=456