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73x2x5简便

6x32x5的简便计算=6x5x32=30x32=960

157x16x5=157*(16*5)=157*80=12560 再看看别人怎么说的.

1.25x8.8x5=1.25*8*1.1*5=10*5.5=55 如果对您有帮助;请采纳答案,谢谢.

=4*5*9=20*9=180

=5*6*3*4=5*3*2*3*4=9*10*4=40*9=360

0.2*7.125*5=0.2*5*7.125=1*7.125=7.125

4.5*5.5=(5-0.5)*(5+0.5)=5*5-0.5*0.5=25-0.25=24.75

127.35/5=127.35*2/10=254.7/10=25.47

首先你要知道125*80=10000 所以你应该把括号拆开来.算125*80=10000再用10000乘5等于5万

20.5-1.074-8.35*5.5 =19.426-8.35*(5+0.5) =19.426-8.35*5-8.35*0.5 =19.426-41.75-4.175 =-26.499

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