共30题用时5分钟

22-6+8=

80-9=

37+16=

8+19-11=

9+34=

35-29=

27-16+15=

18+26=

37-21=

18+6-15=

35+24=

28+34=

16-9+15=

26+27=

37+25=

15+19-16=

37+25=

91-8=

16+12-18=

91-8=

73-29=

18+11-13=

73-19=

61-19=

18+12-19=

84-16=

34+38=

22-15+7=

54-54=

38+36=