题目列表(包括答案和解析)
| 0.9÷10= | 53.8÷100= | 0.8÷10= | 6.5×100= | 0.12+0.98= |
| （99-9）÷9= | 0.4+0.56= | 310-99= | 4.25+1.25= | 6.3-3= |
| 7.8-0.78= | 900÷45= | 780+99= | 10-0.99= | 32-9.8-0.2= |
| 50-50÷50= | 4-0.04= | 2.06×10= | 5-0.7+0.3= | 6.4+4.4= |
| 4.3+5= | 10+7.6= | 9.8-6= | 12.4+5.6= | 8-4.5= |
| 2.5+7= | 8.2-6= | 25.7-15.7= | 3.5+12.5= | 54÷9×54÷9= |
| 69-31×0= |
1、5+7=12 7×5 = |  ÷ = |  + = |
× = | 1+ -0.4= |  +0.75= |
 + = |  ÷9= | += |
 ×0.4= | 4÷ = |  ×= |
| （2+）×（1+）= | ×9= |  += |
| 4÷= | +1= | 5-（2+ ）= |
| 4.5÷= | 39× = | 11×（10+ ）= |
| 11+（3+）= |  ×= | 8×= |
| 12-（6+）= | 1÷（1+）= | 20÷20%= |
| 1÷0.01= | 1.12= | 9.9÷（1+ ）= |
81÷ = | 1.65-0÷1.65= | × ×= |
| 5-1.4-1.6= | （0.18+0.9）÷9= | 8× ×1.25= |
| 1.25×0.16×8= | +7.3÷10%= | +9-0.2= |
| 5.08-0.74-1.26= | ×0.2= | 1-.0375÷= |
| 8÷0.5+×（1+）= | （ +）×24= | 10（3+ ）÷（3+）= |
| （3++5++2+）-（5+）= | + ÷+= | 1--= |
| 3-（2+）+（2+）= | -÷3= | 0×（3+）+（1+）= |
| +-+= | 0.125×64×0.125= |  ×8+8×= |
| +×16= | -+= |
| 2.5×7.1×4 | 16.12×99+16.12 |
| 5.2×0.9+0.9×4.8 | 26×15.7+15.7×24 |
| 2.7×9.9 | 6.4×10.1 |
| 0.25×[（2.8+4.4）÷1.2] | [32-（1.95-1.95）]÷1.6． |
| 20.9+10.5÷（5-3.5） | 3.5×0.7+5.5×0.7+0.7 |
| 10.64+7.65×2.4+11.76 | 6.2×9.9 |
| 9.83×（3.8-2.3）+1.5×6.17 ? | 21÷0.25÷0.4． |
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