1. (2020一下·江阴期末) 直接写出得数。

4+55=              29+4=              88-60=           78-20+30=

43-9=               16-8=              100-50=          8+40-3=

56-7=               46+3=              50+8=           20+30+7=

8+18=              25+20=            77-6=            18-6-9=

12-3=               92-40=             4+35=            30+15-7=