共30题用时5分钟
80+7=
16+38=
82-9×1 =
29+67=
79-56=
54-2×2 =
56+24=
65+32=
23-7×1 =
66-36=
84-36=
17-5×3 =
55+29=
64+36=
63-9×6 =
54+28=
65+25=
34-9×3 =
39+36=
37+32=
54-5×6 =
13+79=
84-56=
48-8×2 =
39+21=
61+22=
2-5×1 =
78-56=
63+28=
44-7×5 =