共30题 用时5分钟

26+50=

26-24=

80-21=

65+24=

81-46=

80-60=

62+2=

68-31=

23-1=

4+70=

37+41=

32-12=

45-21=

90-36=

82-16=

86-82=

48+22=

87-73=

49-11=

90-3=

72-33=

7+23=

68-60=

31-8=

50-39=

86-46=

42+54=

35-32=

5+11=

76-43=