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38x4x5简便算法

12x6x5=12x(6x5)=12x30=360

解:34X4X5=34X(4X5)=34X20=680

49x2x5 =49x(2x5) =49x10 =490 笑望采纳,谢谢!

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

(30425)5简便计算304*25÷5=304*5=1520 直接计算

6x32x5的简便计算=6x5x32=30x32=960

6400/400=16*400/400=16 77x4x5=77*20=1540

32x6x5的简便运算怎么算.=32x30=960 再看看别人怎么说的.

用简便方法计算39x8x5=39x(8x5)=39x40=1560

8X9X5=(8X5)X9=40X9=360

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