13.7÷12.5÷0.8 3.25×8.4+6.75×8.4 (8.1-5.4)÷3.6+85
13.7÷12.5÷0.8 3.25×8.4+6.75×8.4 (8.1-5.4)÷3.6+85
8.4÷1.25÷16
8.4÷0.56竖式
(8.1-5.4)÷3.6+85.7简算,
递等式计算0.78+8.4÷4.2×3.6
8.4÷0.6+8.4÷0.4简便计算
4.52+5.48+0.25×40 8.4×(0.125+0.1÷0.8)
0.56÷3.5 5.4÷3.6-0.7 (17.6+0.96)÷0.8 简便方法计算
【(8.1-6.6)÷0.8】×1.
用递等式计算!0.78+8.4÷4.2×3.6 10.33÷(0.46-0.36)×3.4 (9.6-1.69÷1.3)
66.6666÷12.5÷3.7÷0.8÷0.3
3.6×12.5÷3×0.8的简便计算