Real-Life Algebra: Simplifying Expressions & Variables

A store sells pencils for $x each. If you buy 3 pencils, how much do you spend? Write an expression and simplify it.

• x+3

• 3x

• 2x

• 4x

Maria has $y in her savings. She saves $5 more each week. Write an expression for her total savings after 4 weeks and simplify it.

• y + 15

• y + 10

• y + 20

• y + 25

A recipe calls for 2x cups of flour. If you want to make half the recipe, how much flour do you need? Write and simplify the expression.

• 4x cups of flour

• x/2 cups of flour

• 2x cups of flour

• x cups of flour

Tom has 10 apples. He gives away x apples to his friends. Write an expression for the number of apples he has left and simplify it.

• 10 + x

• x - 10

• 10 * x

• 10 - x

A car travels at a speed of 60 miles per hour. If it travels for t hours, how far does it go? Write and simplify the expression for distance.

• 60t miles

• 60t kilometers

• 30t miles

• 120t miles

A box contains 5x toys. If you add 10 more toys, how many toys are in the box now? Write and simplify the expression.

• 5x - 10

• 5x + 10

• 10x

• 5x + 5

The total cost of y books is $15 each. Write an expression for the total cost and simplify it if you buy 4 books.

• $75

• $45

• $30

• $60

A gardener plants x rows of flowers. Each row has 3 flowers. Write an expression for the total number of flowers and simplify it.

• x * 3

• 3x + 1

• x + 3

• 3x

A movie ticket costs $8. If you buy x tickets, how much do you spend? Write and simplify the expression for the total cost.

• $8 + x

• 8 + x

• $8x

• 8x

A school has x students. If 5 more students enroll, write an expression for the new total and simplify it.

• x + 5

• x - 5

• x + 10

• 5x