1. Beat the Computer Drill
Properties
Beat the Computer Drill

2. Directions
A slide will appear showing an equation which illustrates a property.
Say the property aloud before the computer can answer (6 sec).
You will hear a sound when the slide changes.

3. a + b = b + a

4. Commutative Property for Addition
a + b = b + a

5. ab + ac = a(b + c)

6. Distributive Property
ab + ac = a(b + c)

7. a  b = b  a

8. Commutative Property for Multiplication
a  b = b  a

9. a  1 = a

10. Multiplicative Identity Property
a  1 = a

11. a + 0 = a

12. Additive Identity Property
a + 0 = a

13. (a  b)  c = a  (b  c)

14. Associative Property for Multiplication
(a  b)  c = a  (b  c)

15. (a + b) + c = a + (b + c)

16. Associative Property for Addition
(a + b) + c = a + (b + c)

17. a + (-a) = 0

18. Additive Inverse Property
a + (-a) = 0

19. a(b + c) = ab + ac

20. Distributive Property
a(b + c) = ab + ac

21. a  0 = 0

22. Multiplicative Property of Zero

23. 1
a  = 1 a

24. Multiplicative Inverse Property1

25. If x = b, then x + c = b + c

26. Addition Property of Equality
If x = b, then x + c = b + c

27. If x = b, then x  c = b  c

28. Multiplication Property of Equality
If x = b, then x  c = b  c

29. a = a

30. Reflexive Property of Equality
a = a

31. If a = b, then b = a

32. Symmetric Property of Equality
If a = b, then b = a

33. If a = b, and b = c, then a = c

34. Transitive Property of Equality
If a = b, and b = c, then a = c

35. If x = 3, then 5x = 15

36. Substitution Property of Equality
If x = 3, then 5x = 15

37. Good Job!