首先:2.4x÷(2x-0.7)×(2x-0.7)=1.2
5.4÷3= | 6.5÷0.01= | 6.18÷0.6= | 0.015÷0.3= |
10÷0.5= | 2.4×5= | 0.42-0.32= | 1.25×1.6= |
3.4×9.75= | 2.3÷0.066= |
28.7-14.7+1.4 | 21÷3.5+21÷1.5 |
56.14÷3.5÷2 | 6.17×13.6+1.36×( )(填数使它可简便计算) |
4.2x-2.6x=4.88 | 5(20x+1.5)=17.5 |