Algebraic Expressions with Models

Re-write the expression: the product of 4 and p

• 4/p

• 4 x p

• 12/4p

• 12/4x

Write an algebraic expression for:

three times a number plus 16

• 3(16)+n

• 16n+3

• 3n+16

Translate the sentence into an equation:

Four more than six times a number is 18.

• 4 + 6x = 18

• 4x + 6 = 18

• 6x + 4 = 18

• not enough info

Translate this phrase into an algebraic expression:

two times the sum of a number and five

• 2 + y + 5

• 2y + 5

• 2(y + 5)

• 2 - y + 5

Translate this phrase into an algebraic equation:

Six fewer than twice a number is four.

• 6 - 2x = 4

• 2x - 6 = 4

• x² - 6 = 4

• 6 - x² = 4

Translate: Six fewer than twice a number is four.

• 6 - 2x = 4

• 2x - 6 = 4

• x² - 6 = 4

• 6 - x² = 4

Translate this phrase into an algebraic equation:

Three times the sum of a number and 7 is equivalent to 57.

• 3x + 7 = 57

• 3(x + 7) = 57

• 7x + 3 = 57

• 7(x + 3) = 57

Translate this phrase into an algebraic equation:

Twice the difference of a number and 16 is equivalent to 28.

• 2x + 16 = 28

• 2x - 16 = 28

• 2(x + 16) = 28

• 2(x - 16) = 28

Erica has three less than twice as many pencils as Dale has. If Dale has d pencils, which expression shows how many pencils Erica has?

• 3 - 2d

• 2d - 3

• ½d - 3

• 3 - ½d

Which choice models this situation?

Robyn had some video games, then bought 4 more. Now she has a total of 10 games.

• v - 4 = 10

• v + 4 = 10

• 10/4 = v

• 4v = 10