Exploring Variable Relationships: A 5th Grade Challenge

1. Sarah has 5 more apples than Tom. If Tom has x apples, how many apples does Sarah have?

• x - 5

• x + 10

• 2x

• x + 5

2. A book costs $12. If you buy x books, how much will you spend in total?

• $12 - x

• 12 * x

• $12 + x

• $12 / x

3. The total number of marbles in a jar is 30. If there are x blue marbles, how many red marbles are there?

• 15 + x

• x + 30

• 30 - 2x

• 30 - x

4. A rectangle has a length of 4 meters and a width of x meters. If the perimeter is 20 meters, what is the value of x?

• 6

• 5

• 7

• 8

5. Jenny has twice as many stickers as her brother. If her brother has x stickers, how many stickers does Jenny have?

• x

• 3x

• 2x

• x+2

6. A pizza is cut into x slices. If 3 slices are eaten, how many slices are left?

• x - 3

• x - 1

• 3 slices left

• x + 3

7. The total cost of 3 notebooks is $15. If each notebook costs x dollars, what is the value of x?

• 7

• 10

• 3

• 5

8. A car travels x miles in 2 hours. If it travels 60 miles in total, what is the value of x?

• 45

• 30

• 75

• 60

9. There are x students in a class. If 5 more students join, the total becomes 25. How many students were there originally?

• 30

• 10

• 15

• 20

10. A box can hold x toys. If you have 20 toys and want to fill the box completely, how many boxes do you need?

• x / 20

• 20 / x

• 10

• x + 20