425﹣198=
40×12.5%=
0.57+0.3=
28÷0.28=
2+15%=
3+=
2÷1%=
125×8=
×=
6.9﹣1.4=
×3=
÷=
803-207= ÷5= 798+150= + =
0.25×8= 1.5- = 7.5÷ = 0.77+0.3=
9.8-8= × = 45.54÷45= 24× =