5-7 Answers

1. 4.8

2. 1

3. a

4. 8

5. 4.2

6. 111.23

7. 4 ½

8. 1300

9. 140

10. Associative

11. Commutative

12. Commutative

13. Associative

14. Commutative

15. Commutative

16. Associative