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12.6×7.6×2.32÷1.9÷1.4÷2.9的简便算法

原式 =(12.6÷1.4)x(7.6÷1.9)x(2.32÷2.9) =9x4x0.8 =36x0.8 =28.8 供参考。

=12.6/1.4*(7.6/1.9)*(2.32/2.9) =9*4*0.8 =36*0.8 =144/5=28.8

(1)2.8×7.6+1.4×2.8+2.8 =2.8×(7.6+1.4+1)=2.8×10=28(2)4.5×1.2-3.15÷15=5.4-0.21=5.19(3)[12.8-(7.5+4.5)]×2.5=[12.8-12]×2.5=0.8×2.5=2(4)0.65+2.7+0.35+7.3 =(0.65+0.35)+(2.7+7.3)=1+10=11(5)3.8×0.56+0.56×6.2=(3.8+6.2...

原式 =(7.6x2.8+1.4x4x1.9-2.8x1.4)÷2.5x4 =(7.6x2.8+1.4x7.6-2.8x1.4)÷2.5x4 =[7.6x(2.8+1.4)-2.8x1.4]÷2.5x4 =(7.6x4.2-2.8x1.4)÷2.5x4 =(7.6x3x1.4-2.8x1.4)÷2.5x4 =(22.8x1.4-2.8x1.4)÷2.5x4 =20x1.4÷2.5x4 =20÷2.5x1.4x4 =8x1.4x4 =11.2x4...

13.6+1.4÷(18.2-17.8)=13.6+1.4÷0.4=13.6+3.5=17.10.72÷[3.6×(0.51-0.49)]=0.72÷[3.6×0.02]=0.72÷0.072=10 10.01×12.6-12.6×0.01=126.126-0.126=12610.9×3.23-3.23=35.207-3.23=31.977

17.6-7.6×1.4-5.36=17.6-7.6-7.6×0.4-5.36=10-(3.04+5.36)=1.6 2.1÷(0.7+0.14)=2.1/2,.1=1

楼上的悲催了

=4.06+28.8 =32.86

根据分配率(1.4-0.2)÷0.6

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