www.5129.net > 65.4*0.67+6.54*3.1+0.654*2怎么简算

65.4*0.67+6.54*3.1+0.654*2怎么简算

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

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

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

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

观察特点,都有654.可以提出来,再算,后面小数点就先处理在算加减,最后算654

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

0.65×6.4-0.65×5.4 =0.65×(6.4-5.4) =0.65×1 =0.65 本题

0.65*4÷0.35*4 =13/20*4÷7/20*4 =13/20*20/7*4*4 =13/

正确的 0.65+0.65+0.65+0.66 =0.65×4+0.1 =2.6+0.1 =

(0.654+10.9x6.54)x(20一1.25) (6.54×0.1+10.9x6.54x1

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