www.5129.net > 65.4×0.67+6.54×3.1

65.4×0.67+6.54×3.1

65.4*0.67+6.54*3.1+0.654*2 =6.54*(6.7+3.1+0.2) =

65.4×0.67+6.54×3.1 =65.4×0.67+65.4×0.31 =65.4×(0

65.4x0.67+6.54x3.1+0.654x2 =0.654x67+0.654x31+0.6

=6.54*6.7+6.54*3.1+6.54*0.2 =6.54*(6.7+3.1+0.2) =6

巧算下面这道题: 65.4x0.67+6.54x3.1+0.654x2 =6.54x6.7+6.54

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