Write Expressions in Which Letters Stand for Numbers

Justin can type w words per minute. Melvin can type 4 times as many words as Justin. Write an expression that represents the rate at which Melvin can type.

• w + 4w

• 4w

• w + 4

• w⁴

Yancy swam y yards yesterday. Ryan swam 5 yards less than half the amount of yards as Yancy. Which expression represents the number of yards Ryan swam yesterday?

• y/2 - 5

• 5y/2

• 5 - y/2

• 2/5y

Which expression represents: a number d is decreased by 5 and then doubled?

• d - 5 x 2

• d + 5 x 2

• (d-5) x 2

• 2 x d - 5

Nathan had n baseball cards and Devin had s baseball cards. They combined their baseball cards and then sold 10 of them. Which expression represents this scenario?

• n x s - 10

• n - s - 10

• n + s + 10

• n + s - 10

Which expression represents: The sum of 25 and h is divided by f cubed?

• 25+h/3f

• 25-h/3f

• 25h/f³

• 25+h/f³

Rachel picked x amount of apples, took a break, and then picked v more. Which expression represents the total number of apples Rachel picked?

• x - v

• x + v

• x * v

• x/v

Which expression represents: A number h is tripled and then decreased by 8?

• 3h/8

• h³ - 8

• h³/8

• 3h-8

Which expression represents the following scenario: Sidney brought s carrots to school and combined them with Jenna's j carrots. She then splits them equally among 8 friends.

• (s + j) x 8

• s + (j - 8)

• (s - j) x 8

• (s + j)/8

Choose the expression that represents: 15 less than the quotient of e and d.

• 15 - e/d

• e/d - 15

• (e-d)/15

• 15 - e x d

Marissa's hair was 10 inches long and then she cut h inches. Choose the expression that represents the scenario.

• 10 - h

• 10/h

• 10 + h

• 10 x h