Exploring Variables: Translating Expressions in Algebra

1. Sarah has x apples. If she buys 5 more, how many apples does she have now? Write an expression for the total number of apples.

• x - 5

• x + 10

• x + 5

• 5 - x

2. A rectangle has a length of 3 meters and a width of y meters. Write an expression for the perimeter of the rectangle.

• 2(3 + y)

• 2(3 - y)

• 3 + 2y

• 6 + 2y

3. If the cost of one book is p dollars, how much will 4 books cost? Write an expression for the total cost.

• 2p

• 4p

• p+4

• 3p

4. Tom is x years old. In 5 years, how old will he be? Write an expression to represent his age in 5 years.

• x - 5

• x + 10

• x * 5

• x + 5

5. A car travels at a speed of s miles per hour. How far will it travel in t hours? Write an expression for the distance traveled.

• s - t

• s + t

• s / t

• s * t

6. If a pizza has c slices and you eat 2 slices, how many slices are left? Write an expression for the remaining slices.

• 2 - c

• c + 2

• c - 2

• c - 1

7. The total number of students in a class is n. If 3 students leave, how many students are left? Write an expression for the remaining students.

• n - 1

• 3 - n

• n + 3

• n - 3

8. A movie ticket costs m dollars. If you buy 3 tickets, how much do you spend? Write an expression for the total cost of the tickets.

• 2m

• 3m

• 4m

• m+3

9. If the temperature today is t degrees and it increases by 10 degrees, what will the new temperature be? Write an expression for the new temperature.

• t + 10

• 10t

• t + 5

• t - 10

10. A box contains b balls. If you add 7 more balls to the box, how many balls are in the box now? Write an expression for the total number of balls.

• b + 14

• b * 7

• b - 7

• b + 7