共30题用时5分钟

22+55=

70-42=

72-54=

62-48=

83-56=

76-37=

50+22=

71-55=

56-36=

55+38=

15+57=

39+38=

78-29=

37+18=

47+19=

36+27=

46-38=

65-26=

45-16=

42-19=

74-18=

34+58=

53-29=

63+28=

43-25=

73+14=

36-27=

52+16=

62-59=

52-34=