共30题用时5分钟

3×8 =

34+49=

64-5×6 =

5×2 =

80-25=

66-7×4 =

3×4 =

45-29=

44-7×5 =

2×8 =

18+65=

90-9×7 =

9×6 =

88-65=

89-8×5 =

6×4 =

54+25=

43-4×7 =

2×8 =

76-65=

54+12=

4×8 =

63-3=

5+3+17=

3×8 =

62+5+15=

89-40=

4×6 =

51+15=

54+31=