Step-by-step explanation:
1. (1/2×1×2)+(2×2)
2. (1×1)+(2×3)
3. (4×2)+(1×4)
4. 2(1/2×3×2)
5. (4×4)+(2×4)
6. (2×6)+(1×5)
7. (190×320)+(1/2×320×305)
