46+5=
7337 24+9 24-9 18+4141+18
99100 50+5040+60 32-910+3
10+=15 -8=10 11-9=
16-=7 +20=40 68+8=
14-8= 17-9= 11-2= 30+40= 32+50=
12-5= 13-7= 16-8= 90-10= 48-7=
□〇□=□(个)
笑笑有多少支蜡笔?