10-0= 10+10= 10+0=
10-10= 15-5= 15-10=
口算
| 99×0.25= |
0.2×0.04= |
0.24÷0.3= |
0.45÷0.5= |
| 8÷5= |
2.7×2= |
3.6÷0.01= |
0.12+0.8= |
| 0.8×1.25= |
7÷0.25= |
0.4×0.02= |
3.5+7.6= |
| 1.23÷3= |
2.4×2.5= |
16÷1.6= |
0.9÷0.01= |
解方程：
x÷1.44=0.4
6x﹣2.7=1.5
3.85+1.5x=6.1．
计算下面各题，能简算的要简算．
①102×4.5
②8×（20﹣1.25）
③8.3+8.3×99．
列竖式计算
0.73×2.15
7.38÷1.6．
直接写得数
| 200×0.04= |
3.5×0.1= |
3.6÷0.09= |
12÷1.2= |
| 0.42÷0.6= |
3.2×0.5= |
0.21×0.3= |
2.5×1.4= |
| 9﹣2.7= |
7.5+9.2= |
2.6×0.3= |
16﹣0.9= |
| 4.5÷0.9= |
8.5×10= |
5.2÷0.2= |
1.2×6= |
| 7.9÷0.1= |
7.6×4= |
4.5÷3= |
0.65÷0.1= |