2.5+0.37= 1﹣0.73= 0.5×0.8= 0.9×7=
1.2÷0.4= 4÷0.5= 3.6÷4= 0.84÷0.4=
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=
6.7575756.75 56.2÷0.956.2×0.9 6.9×0.986.9