①7+6=
②6+9=
③12+5=
④12﹣8=
⑤17﹣7=
⑥16﹣10=
⑦20+8=
⑧50+5=
⑨83﹣3=
⑩6+90=
⑪88﹣8=
⑫74﹣4+20=
⑬65﹣60=
⑭2+70=
⑮42+5=
⑯36﹣30+4=