Real-Life Algebra: Write Expressions & Solve Equations

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

• x + 5

• x - 5

• x + 10

• 5 - x

2. A book costs $y. If you buy 3 books, how much do you spend? Write an expression for the total cost.

• $y

• 6y

• 3y

• $3y

3. Tom is x years old. In 4 years, he will be twice as old as he is now. Write an equation to find x.

• 4

• 2x = x + 4

• x + 4 = 2x

• x - 4 = 2

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

• 6x + 6

• 5x + 3

• 4x + 6

• 2x + 3

5. If a car travels y miles per hour, how far will it travel in 3 hours? Write an expression for the distance traveled.

• 2y

• 4y

• y/3

• 3y

6. Lisa has 10 more than twice the number of candies that Mark has. If Mark has m candies, write an expression for the number of candies Lisa has.

• m + 10

• 3m + 10

• 2m + 10

• 2m - 10

7. The sum of a number z and 12 is equal to 30. Write an equation to find z.

• z = 18

• z = 22

• z = 25

• z = 15

8. A pizza has x slices. If you eat 2 slices, how many slices are left? Write an expression for the remaining slices.

• x + 2

• x - 2

• x - 1

• 2 - x

9. The total cost of 4 notebooks is $20. Write an equation to find the cost of one notebook.

• n = 2

• n = 10

• n = 15

• n = 5

10. If you have 3 times as many stickers as your friend who has s stickers, write an expression for the number of stickers you have.

• s - 3

• 2s

• 3s

• s + 3