3.6÷3=
2.8+1.6=
1÷8=
0.6×50=
9.8×8=
18.9-9.9=
0.36÷1.8=
5.4÷3=
3.8×2=
0.36÷9=
4.8÷0.8=
0.1×0.9=
0.2a+0.8a=
102﹣92=
4.5÷9﹣0.45=
1﹣0.2÷0.2=
3.2÷0.8=
1800-799= ×0= 354+147≈
10-10%= 3.6 +1.8= ×5.6= 723÷89≈
2÷= 12.3+7 = 0.23= 0.125×17×8=