共30题 用时5分钟

52+9=

47+8=

49+9=

85-8=

38+4=

49+3=

80-3=

43-9=

62-8=

36-7=

62-9=

50-4=

96-9=

32-8=

31-4=

41+32=

59-44=

68-9=

49-17=

3+54=

21-7=

22-9=

4+41=

30-8=

51-6=

82-5=

62-4=

40-2=

97-9=

82-7=