Important do these computations two ways-using pv function

Question

1. Find the present value of: (1) $9,000 at 7% in 10 years; (2) $20,000 in 5 years at 12%; (3) $1,000 in 50 years at 10%; (4) $25,000 in 5 years at 8%. Important: Do these computations two ways-using PV function in Excel and using the Appendix table in your textbook.
2. Find the future value of: (1) $10,000 in 2 years at 7%; (2) $100 in 50 years at 4%; (3) $9,000 in 12 years at 7%; (4) $100,000 in 20 years at 13%; (5) $5,000 in 25 years at 2% compounded semiannually. Important: Do these computations two ways-using the FV function in Excel and using the Appendix table in your textbook.