题目列表(包括答案和解析)
| 200+800= | 78+50= | 4×8+20= | |
| 3600-500= | 315+289= | 54÷9×8= | 263- |
| 50÷2= | 9000-6000= | 6×4÷8= | |
| 340-160= | 160+90= | 81÷9+36= | 326+ |
| 42×2= | 68-54= | 3×6÷2= | |
| 280+120= | 693-381≈ | 32-10+4= | 30÷ |
| 125-96= | 392+105≈ | 90-65+45= |
| 200+800= | 78+50= | 4×8+20= | ________+900=1000 |
| 3600-500= | 315+289= | 54÷9×8= | 263-________=78 |
| 50÷2= | 9000-6000= | 6×4÷8= | ________-36=69 |
| 340-160= | 160+90= | 81÷9+36= | 326+________=400 |
| 42×2= | 68-54= | 3×6÷2= | ________÷4=8 |
| 280+120= | 693-381≈ | 32-10+4= | 30÷________=5 |
| 125-96= | 392+105≈ | 90-65+45= | ________×9=72． |
| 7.2+2.8= | 0.9÷0.01= | 3.5+7.6= | 3×0.2×0.5= |
| 0.96÷0.3= | 1.5×0.4= | 7÷0.25= | 2.5×0.7×0.8= |
| 8-2.5= | 16÷1.6= | 5.6×1.01= | 8×（2.5+0.25）= |
| 0.36+0.64= | 64.32÷16= | 72.8÷0.8= | 8.4×0.2+1.6×0.2= |
| 8.4÷4.2= | 0.05×0.8= | 2.56-0.37= | 1.25×0.8×0.5= |
| 12×2.5= | 1.23×3= | 3.2÷1.6= | 3.5+3.5×3= |
| 19.6÷2= | 8.8÷2.2= | 3.9+2.03= | 7.2×0.3+2.8×0.3= |
| 13.8+9.9= | 2.4×2.5= | 0.75×4= | （1.5+0.25）×4= |
| 4.2÷0.1= | 4.2÷3.5= | 2.14-0.9= | 27+456+73= |
| 12÷0.3= | 2.87÷0.7= | 13÷4= | 24÷4+56÷4= |
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