共30题用时5分钟
22+28=
82-37=
96-59=
62-35=
79-28=
56-27=
81-35=
53+16=
86-58=
35+19=
40-17=
52+23=
84-29=
64+24=
35+17=
72+18=
55+38=
86-45=
74-37=
63+37=
40-12=
46+27=
47+19=
63-37=
32+19=
54-45=
50+22=
72-45=
75-33=
