Solving Real-Life Problems: Variables and Expressions Quiz

1. Sarah has 3 apples and buys 5 more. If she gives away 2 apples, how many does she have left? Write an equation to represent this situation and solve it.

• 4

• 8

• 6

• 10

2. A box contains x red balls and 4 blue balls. If you add 3 more red balls, how many red balls are there now? Write an expression and evaluate it for x = 5.

• 10

• 7

• 8

• 5

3. Tom has 2x + 3 candies, and his friend gives him 4 more candies. Write an equation to find the total number of candies Tom has now and simplify it.

• 2x + 7

• 3x + 7

• 2x + 6

• 2x + 4

4. A car travels 60 miles in the first hour and 40 miles in the second hour. Write an equation to find the total distance traveled and solve it.

• 120 miles

• 100 miles

• 80 miles

• 90 miles

5. Lisa has 5x - 2 pencils, and she buys 3 more. Write an expression for the total number of pencils and evaluate it for x = 4.

• 15

• 25

• 21

• 18

6. If a rectangle has a length of 2x + 3 and a width of x + 1, write an expression for the perimeter and simplify it.

• 5x + 7

• 4x + 6

• 6x + 8

• 7x + 9

7. A store sells 3x + 5 shirts and 2x - 3 pants. Write an expression for the total number of clothing items and simplify it.

• 4x + 8

• 3x + 2

• 6x + 2

• 5x + 2

8. Mark has 4y + 6 stickers, and he gives away 2y - 1 stickers. Write an equation to find out how many stickers he has left and solve it.

• 2y + 7

• 4y + 5

• 3y + 5

• 2y + 6

9. A recipe calls for 2x + 4 cups of flour and 3x - 2 cups of sugar. Write an expression for the total amount of ingredients and simplify it.

• 4x + 6

• 5x + 2

• 6x + 2

• 5x - 2

10. If a book costs 15 dollars and you buy x books, write an expression for the total cost and evaluate it for x = 3.

• 45 dollars

• 15 dollars

• 60 dollars

• 30 dollars