4×9=____
7×3=____
25-8=____
9×9-50=____
32-0=____
80-4=____
55+32=____
8×5+40=____
50-30=____
6×3=____
60-18=____
4+5×6=____
36+37=____
65-18=____
8×9=____
90-（32+18）=____
