Pls help me I’ll give thxs and brainiest if you answer correctly to both exercises

Answer:
Activity 1
1. a.8, b.4, c.8, d.12
2. a.10, b.8, c.20, d.40
3. a.16, b.9, c.40, d.27
Activity 2
1. a.10, b.40, c.15
2. a.4, b.35, c.14
3. a.80, b.20, c.2.5