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