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25x2x4简便算法

25×19×4×2 =(25×4)×(19×2) =100×38 =3800 你好,本题已解答,如果

(30×25)×2×4 =(30×2)×(25×4) =60×100 =6000

25x4+3x25-25x2 =(4+3-2)×25 =5×25 =125 有疑问请追问,我一定尽快

45X25X2X4 =45*2*(25*4) =90*100 =9000

12x26+12x4 =12x(26+4) =12x30 =360

2.25x4.8+77.5x0.48 =2.25x4.8+7.75x4.8 =4.8x(2.25

2.8x1.7x4.5=21.42 运用拆分法将2.8分为3-0.2,通过计算得: 2.8x1.7x

原式等于 25×4×(35×2) =100×70 =7000 所以原式的计算结果为7000.

25X35x8=25X4x35X2运用了(乘法的分配)进行简便 朋友,请采纳正确答案,你们只提问

23X2X4十25x4X2十27x1X8十25X8X1 =23x8+25x8+27x8+25x8

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