共30题用时5分钟

34+36=

23+48=

87-7×5 =

81-56=

47-28=

45-1×8 =

69+6=

68+25=

34-2×9 =

35+34=

58+28=

15-2×5 =

62+36=

37+58=

64-3×4 =

81-69=

57+29=

89-2×8 =

74-26=

33+2+38=

78-9×6 =

54+36=

49+39=

98-6×4 =

67+24=

71+16=

80-2×8 =

36+49=

77+21+9=

73-4×8 =