0.25×8.5×4
1.23×9.4+0.77×9.4
37.8÷12.5÷0.8
4.75×99+4.75
3.5×0.2= 10÷0.5= 6×0.25= 0.63÷0.9= 1.8×0.4=
0.99÷0.1= 1.2×4= 3.9×0.01= 2.33×1.2= 1.25×0.8=
8.64÷12= ★12.2÷0.55≈
90÷(3.6-1.8)
3.4×7.8÷3.9
(3.2+0.12)÷0.8
78÷2.5÷0.4