0.25×3.7×40 7.86×99+7.86
6.4÷0.8=
4.8÷0.4=
0.72÷0.06=
100÷0.25=
0.6×0.3=
3.6÷0.09=
5÷0.25=
4.2÷0.07=
52-x=15 10.2-5x=2.2 8x-5x=27
(x+2.5)×4=15 3×1.5+6x=33
9x+6x=4.8
2(x-3)=5.8
3x-12×6=36
3.3÷[(1.3+1.2)×0.6] 7.3×7.3+2.7×7.3 7.5-1.5÷5×0.4
(6.14-3.75)÷2.5÷4 12.5×3.2×0.25