Real-World Math: Solve for x and Check Your Answers

1. Sarah has 3 times as many apples as x. If she has 15 apples, how many apples does x represent?

• 7

• 10

• 3

• 5

Tags

CCSS.6.EE.B.6

2. A book costs x dollars. If you buy 4 books for $28, what is the value of x?

• 7

• 8

• 10

• 5

Tags

CCSS.6.EE.B.7

3. The perimeter of a rectangle is 2(x + 5) meters. If the perimeter is 30 meters, what is the value of x?

• 20

• 5

• 15

• 10

Tags

CCSS.7.EE.B.4A

4. A movie ticket costs $10 more than x dollars. If the total cost for 3 tickets is $42, how much is x?

• 6

• 10

• 4

• 8

Tags

CCSS.7.EE.B.4A

5. Tom is x years old. If he is 5 years younger than his brother who is 15, how old is Tom?

• 8

• 12

• 14

• 10

Tags

CCSS.6.EE.B.6

6. The equation 2x + 4 = 20 represents the number of candies in a jar. How many candies are there if you solve for x?

• 6

• 10

• 8

• 12

Tags

CCSS.7.EE.B.4A

7. A shirt costs $20, which is $5 more than x. What is the value of x?

• 15

• 30

• 25

• 10

Tags

CCSS.6.EE.B.7

8. If 5 times x equals 45, what is the value of x? Check your solution by substituting back into the equation.

• 7

• 10

• 9

• 8

9. A bicycle costs x dollars. If you save $15 each week and buy it after 3 weeks, what is the value of x?

• 45

• 60

• 75

• 30

Tags

CCSS.6.EE.B.7

10. The sum of x and 12 is equal to 30. What is x? Verify your answer by checking the sum.

• 18

• 25

• 16

• 20

Tags

CCSS.6.EE.B.5