Basic Algebra

take 10 away from s 

• 10 - s 

• s + 10

• s - 10

• s/10

six times the number of girls
Let g = number of girls

• 6 + g

• 6g

• g - 6

What is an algebraic                     expression for                 "the difference of r and 3"?

• r/3

• r + 3

• r - 3

• 3r

Mathematical Equivalence

ON

How many blocks will the next term have?

• The next term will have 16 blocks

• The next term will have 15 blocks.

• The next term will have 14 blocks.

• This is the end of the pattern.

The sum of 6 and x

• x + 6

• 6/x

• x + 4

• 6x

The total of b and 14 

• 14 - b

• 14/b

• 14 + b 

• b - 14 

7g + 5 + 6g  - 3

• 13g - 3

• 12g + 5

• 13g + 2

• 13g - 2

5e - 2 + 3e

• 8e - 2

• 8e + (-2)

• 8e + 2

• 2e - 2

7 + 9b + 3b

• 16b + 3b

• 12b + 7

• 27b + 7

• 6b + 7