Writing Expressions from Phrases

Write an algebraic expression to represent "subtract twelve from a number."

• n + 12

• n - 12

• 12 - n

• $\frac{n}{12}$
  

Write an algebraic expression to represent "a number divided by ten."

• x + 10

• x - 10

• $\frac{x}{10}$

• 10x

Write an algebraic expression to represent "fifteen less than three times a number."

• 15 - 3

• 3x - 15

• 3x

• 15 + 3x

Write an algebraic expression to represent "five more than eight times a number."

• 5(8x)

• 8x - 5

• 5 - 8x

• 5 + 8x

Write an algebraic expression to represent "Kendra owns b books. She increases her collection by twelve books."

• b + 12

• 12b

• 12 - b

• b - 12

Write an algebraic expression to represent "Drew is three years older than Nancy, and Nancy is n years old."

• 3n

• $\frac{n}{3}$

• n - 3

• n + 3

Write an algebraic expression to represent "Alex is charged $0.10 for each text message, x, he sends."

• 0.1x

• x + 0.1

• $\frac{x}{0.1}$

• x - 0.1

Write an algebraic expression to represent "Jody has $100 in a savings account. He saves $10 per week, w.

• 110

• 100 - 10w

• 100 + 10w

• 100w