90﹣62﹣=20 65﹣+16=54
18+36+4699-18 39+24-5312+7 72-45+1740
65+30-4855+20 90-32-2535 28+66-4945
36+5= 72-7= 78+6= 46+6-30=
82+9= 4×2= 26+40= 47+20-8=
3×2= 93-13= 68+9= 38+4+7 =
36+8= 70+30= 2×2= 67-40+21 =
①36+16 =
②50-29=
③74-39 =
④63-45+21=
⑤80-18-26=