526-198=
0.32×2.5=
n×n=
0.32=
24×+=
2.6+1.98=
-=
1.6÷25%=
4x-3×8=12 x:6=2.5:1.5
- =
0.2×0.4=
1-0.09=
1÷×=
9.34+6.6=
×3÷×3=
列方程: