30.8÷4÷7
1.3-3.5÷5
(16.8+2.1)÷0.7
0.96÷(5.4÷0.9)
90÷(3.6-1.8)
3.6÷0.4-1.2×5
3.4×7.8÷3.9
0.36÷0.3÷4
54÷(3.94+6.86) (3.2+0.12)÷0.8
0.175÷0.25×4
12.7+12.5÷5
0.4×99-0.4
0.65×6.4-0.65×5.4 5.01-1.9+4.99
3.6×4-2.5
78÷0.25÷0.4
13.8-0.25×40
脱式计算姓名: