÷10=
-=
2.8+5.3=
2.5×0.8=
=
1÷×=
632÷69≈
25%××4=
0.45+0.3=
4×25=
22.9-2.9=
6.4÷1.6=
3×7÷3×7=
0.43-0.3=
8×12.5=
7.2÷9=
÷2=
9.42÷3.14=
5﹣1.4=
44÷=
40×=
2×=
9÷=
﹣ = ÷2= 9.42÷3.14= 5﹣1.4= + ﹣ =
44÷ = 40× = 2× = 9÷ = 1﹣ × =
÷ = × = ×1.8= 2.5×0.4=