6.7﹣2.3=
100÷0.1=
3.14×22=
3.6×=
350÷68≈
810﹣340=
560÷70=
+ =
÷75%=
12.5×8÷12.5×8=
17×50=
3.48+5.52=
× =
7﹣ =
0.6÷0.25÷4=
-0.01= 39÷1.3= 100-=