Mastering Algebraic Expressions

• x - 7

• x + 7

• 7x

• 7 - x

A rectangle's length is 3 times its width w. Write an expression for the perimeter of the rectangle.

• 2w + 6w

• 4w + 3w

• 2(3w + w)

• 6w + 2w

A book club reads p pages of a book each day. Write an expression for the total number of pages read after 5 days.

• 5 + p

• p - 5

• 5p

• p/5

A farmer has c chickens. Each chicken lays 4 eggs a week. Write an expression for the total number of eggs laid by all chickens in a week.

• c + 4

• 4c

• c/4

• 4 - c

• 8a + 5c

• 8(a + c)

• 8a - 5c

• 5(a + c)

A car travels at a constant speed of s miles per hour. Write an expression for the distance the car travels in h hours.

• s + h

• s/h

• hs

• h + s

A baker uses 2 cups of flour for each cake and 3 cups of flour for each batch of cookies. Write an expression for the total amount of flour used if the baker makes c cakes and b batches of cookies.

• 2c + 3b

• 5(c + b)

• 2(c + 3b)

• 3c + 2b

• 12b + 3s

• 15(b + s)

• 12(b + s)

• 3b + 12s

A gardener plants t trees in each row of a garden. If there are r rows, write an expression for the total number of trees in the garden.

• t + r

• tr

• t - r

• t/r

A company has e employees, each working h hours a day. Write an expression for the total number of hours worked by all employees in a day.

• e + h

• eh

• e/h

• h - e