| A．150 | B．120 | C．270 |
| A．8 | B．9 | C．10 |
| 7×30= | 300×2= | 111×4= | 130×3= | 12×3= | 199×0= |
| 20×50= | 44×2= | 30×6= | 24×2= | 4×40= | 3×23= |
| 48×4≈ | 180×3≈ | 398×5≈ |
| 201×2≈ | 110×6≈ | 71×7≈ |
| 13×2= | 82×4= | 15×5= |
| 120×7= | 308×6= | 434×3= |
| 746+34= | 232×2= | 264÷2= | 2700÷9= |
| 472﹣298= | 696÷3= | 727+85= | 680÷4= |
| 505﹣78= | 5000+200= | 7700﹣700= | 900÷3= |
| 1400﹣600= | 2×443= | 199×9= | 800﹣500= |
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