Equations from Real-Life Scenarios: A 6th Grade Challenge

Maria has 3 times as many apples as John. If John has x apples, write an equation to represent the number of apples Maria has.

• 2x

• 3x

• x

• 4x

A book costs $15. If you buy y books, write an expression for the total cost of the books.

• $15 + y

• 15y

• $30y

• $y + 15

Tom is 4 years older than his sister. If his sister is s years old, write an equation to express Tom's age.

• Tom's age = s - 4

• Tom's age = s + 2

• Tom's age = s * 4

• Tom's age = s + 4

A rectangle has a length that is 5 meters longer than its width. If the width is w meters, write an expression for the length.

• w - 5

• 2w

• w + 5

• w + 10

The sum of a number n and 12 is equal to 30. Write an equation to find the value of n.

• n = 22

• n = 15

• n = 25

• n = 18

A store is having a sale where you get 20% off the original price p. Write an expression for the sale price after the discount.

• 0.80 * p

• 0.20 * p

• p - 0.20

• p * 1.20

If a car travels 60 miles per hour for t hours, write an equation to express the total distance traveled.

• distance = 60t

• distance = 60/t

• distance = 60t^2

• distance = 60 + t

A recipe requires 2 cups of flour for every 3 cups of sugar. If you have s cups of sugar, write an expression for the amount of flour needed.

• s/3

• (3/2)s

• (4/3)s

• (2/3)s

The total cost C of a meal is calculated by adding a fixed fee of $10 to the cost of the food f. Write an equation to represent this situation.

• C = f + 10

• C = f / 10

• C = f * 10

• C = 10 - f

If you have 5 more than twice a number x, write an equation to express this relationship.

• x + 5

• 2*x + 5

• 5x - 2

• 2 + 5x