86.4÷36=
1.57÷3.9≈保留两位小数)
☆7.59÷0.23=
7.6-0.6= 0.8×100= 1.9+9.1= 3.6÷0.9=
7.2÷8= 0.2×0.9= 5.1÷0.01= 4×1.5=
1.4+1.4÷1.4= 8.3×0.9+0.83=
3.2÷0.8=
7.53﹣2.5= 45+215= ×63=
﹣= 24÷= +÷=