68只
62只
22只
44-4= 15-9= 30-20= 24+6= 85-5=
32-2= 60+6= 76-70= 89-9= 30+28=
52-6= 81-5= 44+7= 37-4= 46-8= 60-7=
7171 6996 10099 8283
(天)
(个)