4-2 Describing Patterns with Variables

Answers

 

 

1. n 1 = n

2. a + b = b + a

3. n 0 = 0

4. a + a + 1 = 2 a + 1

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

6. t triangles have t 3 legs

7. p people have p 10 toes

8. ? I have no problem 8

9. Examples: 25% of 80 = 80/4

25% of 200 = 200/4

 

10. Examples: 6/1 = 6

9/1 = 9

 

11. Examples: 5 3 = 3 5

2 4 = 4 2

 

12. Examples: 4 8 = 8 + 8 + 8 + 8

4 5 = 5 + 5 + 5 + 5