14×7 | 2.8-0.4 | 1.2×0.5 | 0.12÷4 |
0.22×0.2 | 0.15÷0.3 | 43+15 | 2.2-1.5 |
0.46+0.6 | 2-1.7 | 4.1+0.04 | 3.5-3 |
20+160 | 210÷30 | 30×20 | 600÷20 |
21×40 | 110-60 | 44×25 | 201×14 |
5××20% | 50%+ | 5-×8 | |
×7 | ×9. |
14×7 | 2.8-0.4 | 1.2×0.5 | 0.12÷4 |
0.22×0.2 | 0.15÷0.3 | 43+15 | 2.2-1.5 |
0.46+0.6 | 2-1.7 | 4.1+0.04 | 3.5-3 |
20+160 | 210÷30 | 30×20 | 600÷20 |
21×40 | 110-60 | 44×25 | 201×14 |
5××20% | 50%+ | 5-×8 | |
×7 | ×9. |