7.186×1.45+1.69×7.186+3.14×2.186(怎样简便怎样算
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7.186×1.45+1.69×7.186+3.14×2.186(怎样简便怎样算
7.186×1.45+1.69×7.186+3.14×2.186
166又1/20÷41
7.186×1.45+1.69×7.186+3.14×2.186
166又1/20÷41
![7.186×1.45+1.69×7.186+3.14×2.186(怎样简便怎样算](/uploads/image/z/493896-48-6.jpg?t=7.186%C3%971.45%2B1.69%C3%977.186%2B3.14%C3%972.186%EF%BC%88%E6%80%8E%E6%A0%B7%E7%AE%80%E4%BE%BF%E6%80%8E%E6%A0%B7%E7%AE%97)
7.186×1.45+1.69×7.186+3.14×2.186
=7.186x(1.45+1.69)+3.14x2.186
=7.186x3.14+3.14x2.186
=3.14x(7.186+2.186)
=3.14x9.372
=29.42808
166又1/20÷41
=(164+41/20)÷41
=164÷41+41/20÷41
=4+1/20
=4.05
=7.186x(1.45+1.69)+3.14x2.186
=7.186x3.14+3.14x2.186
=3.14x(7.186+2.186)
=3.14x9.372
=29.42808
166又1/20÷41
=(164+41/20)÷41
=164÷41+41/20÷41
=4+1/20
=4.05