11.01＋19.96÷49.90-4.99/49.9巧算,[(14.5＋65.25）/2.5＋0.5]4.2

分类: 作业答案 • 2022-06-17 15:43:51

问题描述：

11.01＋19.96÷49.9*0-4.99/49.9巧算,[(14.5＋65.25）/2.5＋0.5]*4.2

答

1)原式=11.01+0-0.1=10.91.
2)原式=[79.75/2.5+0.5]*4.2=(31.9+0.5)*4.2=32.4*4.2=136.08.

11.01＋19.96÷49.9*0-4.99/49.9巧算,[(14.5＋65.25）/2.5＋0.5]*4.2