1. (2022一下·兴化月考) 算一算

8+7=         15-9=          8+8=          13-6=           65-60=

12-7=            16-8=           7+5=           12-9=               73-70=

14-5=           12-3=             13-9=           11-3=             3+60=

5+8=          16-6=            13-4=           17-8=              58-8=

18-9=          14-10=          12-5=            11-4=              49-9=