= 2﹣
= 
+
= 6×
= 0.25×4= 57×
=
÷
= 1÷
= 21÷
= 
÷
= 1÷
= 0÷
=相关试题
算一算，比一比．
| 13×30= |
20×32= |
11×60= |
50×40= |
| 13×300= |
200×32= |
11×600= |
50×400= |
| 130×30= |
2000×32= |
110×60= |
500×40= |
口算．
| 24×3= |
430×5= |
9×120= |
| 65×4= |
720×6= |
54×7= |
| 260×8= |
6×27= |
950×5= |
| 48×2= |
87×4= |
390×3= |
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