www.wfdy.net > 0.125×1/9+1/9×7/8,怎么做?发图片.

0.125×1/9+1/9×7/8,怎么做?发图片.

解 原式=1/17×5/9 + 1/17×5/9 =2×1/17×5/9 =10/153 答题不易,请采纳,谢谢!

7/8-1/4+9/4 =7/8+(9/4-1/4) =7/8+2 =2又7/8

48x27/49 =(49-1)×27/49 =49×27/49-27/49 =27-27/49 =26又22/49 9×(1/9+1/7)x7 =9×1/9×7+9×1/7×7 =7+9 =16 7/8+7/8x99 =7/8×(1+99) =7/8×100 =7/2 ×25 =175/2 5/9x1/8X27 =5/9×27 ×1/8 =15×1/8 =15/8

7/9×0.125+1/9÷8 =1/9【(7X1/8)+1X1/8】 =1/9 X1/8 X(7+1) =1/9 X 1/8 X8 =1/9

里面利用乘法分配律先计算。

8/9-7/10+1/9 =8/9+1/9-7/10 =1-7/10 =3/10 , 你好,本题已解答,如果满意 请点右上角“采纳答案”。

7/6x8/7x……x120/119=20

=(1+20)×10 =21×10 =210 你好,本题已解答,如果满意,请点右上角“采纳答案”。

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