90-62-=20 65-+16=54
①92-75+33=
②64-28-19=
③27+34+25=
④89-32+25=
⑤56+18-15=
⑥93-56-18=
30+57= 8×7-8= 96-6-60= 56-(36-20)=
89-29= 23-3×6= 47+20-17= 50-(17+33)=
①58-13=
②67+16=
③91-19=
④34+48+13=
⑤72-54+29=
①28+56=
②75-34=
③60-27=
④19+48+22=
⑤89-(27+35)=
⑥42+54-36=
①26+4+53=
②12-7+38=
③6+(74-4) =
④42-20-9=
⑤67-(14-9)=
⑥70-(42+8)=
3+8= 10+4= 14-9= 13-8= 80-20+25=
28+60= 86-5= 17-7= 60-10= 6+53-20=
88-77= 68-50= 26+3= 50+8= 34-30+30=
48-6= 10+45= 47+3= 40-( )=20 30+( )=60