82-13=
5x9=
36+19=
7+64=
76-40=
8x4=
7x5=
70-13=
9+44=
7x6=
9x6=
24-7=
7x8-28=
4x7+4=
32-20+5=
72-(47+13)=
微信扫码预览、分享更方便