45>6× ×3<25 50>×7
62>9× 7×<35 ×8<35
8×-8=32 ×9+9=54 4×8+=40
9×-18=36 ×7-7=35 +7×8=64
5×2=
4×3=
7×4=
4×4=
2×8=
3×3=
2×9=
3×2=
3×8=
5×7=
8×4=
9×3=
5×9=
8×5=
6×4=
2×6=
①108×(32+23) ②(108+32)×23 ③108+32×23 ④108÷(32-23)