①6.7+3.3×1.2
②1.25×8.8
③8.53+6-8.53+6
④0.45×0.55-0.45×0.45
⑤2.74×9.5+5×0.274
⑥8.4÷0.6+8.4÷0.4
⑦7.75×[20÷(3.24-3.04)]
摆放张数/张 |
1 |
2 |
3 |
4 |
… |
容纳人数/人 |
6 |
10 |
|
|
… |