1. Find the product of 6 and 250.

2. Find the product of 6 and 820.

3. A golf pro orders shirts for the company sponsoring a local charity golfing event. Shirts size large cost $32 while shirts size extra large cost $38. If 15 large shirts and 11 extra-large shirts are ordered, find the cost.

4. The cost for a South Dakota resident to attend Black Hills State University full-time is $6112 per semester. Determine the cost for 20 students to attend full-time.