摘要：5×4= 2.3×4×0= 100÷40= 3.5÷5=
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| 1÷0.5= | 5÷40= | 2.4×3= | 0.8×0.5= | 12-8.9= |
| 3.2÷0.8= | 4.01÷100= | 1.7×0.5= | 2.5×400= | 13÷0.001= |
| 3.2×50= | 4.6+2.9= | 0.47+1.8= | 299+324= | 0.6÷5= |
| 6.7-2.9= | 23×2.7+77×2.7= | 5.4+0.74+4.6= |
| 1÷0.5= | 5÷40= | 2.4×3= | 0.8×0.5= | 12-8.9= |
| 3.2÷0.8= | 4.01÷100= | 1.7×0.5= | 2.5×400= | 13÷0.001= |
| 3.2×50= | 4.6+2.9= | 0.47+1.8= | 299+324= | 0.6÷5= |
| 6.7-2.9= | 23×2.7+77×2.7= | 5.4+0.74+4.6= |
| 1.8+2.6= | 14.6-6= |  + = | 0.21+ +0.79= |
× = | 0.6÷0.15= |  ÷100= | 5.47-1.8-3.2= |
| -0.25= | 0.5÷ = | 0.4÷40%= | （ + ）×63= |
| 3：2= | 0.25：1.75= | 0.1：= | 1.25××8= |