推算．
| 5×3= |
4×5= |
20×7= |
80×6= |
| 50×3= |
40×5= |
2×70= |
800×6= |
| 500×3= |
400×5= |
2×700= |
80×60= |
推算．
| 5×3= |
4×5= |
20×7= |
80×6= |
| 50×3= |
40×5= |
2×70= |
800×6= |
| 500×3= |
400×5= |
2×700= |
80×60= |
试题篮
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