265×5 45+3723+59 6×66+6
1时100分 82-3755 17+2945
×6<25 8×<30 24>18+
4×9= 5×7= 6×4= 3×8=
7×2= 9×5= 18+43= 67-12=
20-9= 3×9+2= 6×7-8= 6×5+19=