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1.35x4.2x0.8简便算法

1.35×4.2×0.8 =1.35×0.8×4.2 =1.08×4.2 =1×4.2+0.08×4.2 =4.2+0.336 =4.536 请点个采纳呗,谢谢!

1.35x(8 +0.8)x2.5 =1.35×(8×2.5)+1.35×(0.8×2.5) =27+2.7 =29.7

=8.7+0.3×4×0.35 =8.7+0.3×0.13 =8.7+0.39 =10.09

0.35*1.28*2*0.8 =(0.35*2)*1.28*0.8 =0.7*1.28*0.8 =0.7168

8.35*10,1一8、35x0.1二8.35x(10.1一0.1)二8:,35x10

1.35÷(1.35×0.8) =1.35÷1.35÷0.8 =(1.35÷1.35)÷5分之4 =1×4分之5 =4分之5

3.5×0.19+0.35×8.1 =0.35×1.9+0.35×8.1 =0.35×(1.9+8.1) =0.35×10 =3.5

你是要解X吗??中间内个符号是乘吧?哇,打起来有点复杂啦。。题目我不抄啦。。1.4x×0.8=15+x1.12x=15+x0.12x=15x=125呃。。我也不知道解的啊对。。

1.35÷(1.35×0.8) =1.35÷135÷0.8 =1÷0.8 =1.25 你好本题已解答,如果满意 请点右下角“采纳答案”。

0.35x81+3.5x1.1+3.5x0.8 = 3.5x(8.1+1.1+0.8) = 3.5x10 = 35

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