45+62= 34-18= 69+31=
52-25= 61+28= 100-15=
□○□=□
①62+17=
②73-56=
③7+56=
④70-12=
①37+23=
②75-27=
③80-31=
④46+36=
⑤62-13=
⑥23+57=
( )