| 脱式计算,能简便计算的要简算。 13.6+1.4÷(18.2-17.8) 0.72÷[3.6×(0.51-0.49)] 10.01×12.6-12.6×0.01 10.9×3.23-3.23 |
| 13.6+1.4÷(18.2-17.8) =13.6+1.4÷0.4 =13.6+3.5 =17.1 0.72÷[3.6×(0.51-0.49)] =0.72÷[3.6×0.02] =0.72÷0.072 =10 10.01×12.6-12.6×0.01 =126.126-0.126 =126 10.9×3.23-3.23 =35.207-3.23 =31.977 |
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