Unit 9 Algebra Assessment

a subtraction symbol

a number sentence

a multiplication symbol

a variable

$\frac{d}{3}\ =\ 4$

d + 4 = 3

4d = 3

$\frac{d}{4}\ =\ 3$

b + 36 = 4

4 × b = 36

36 × 4 = b

b - 4 = 36

a - 5

a + 5

a ÷ 5

5 - a

6^x

$\frac{x}{6}$

x - 6

6x

v + 7

7 - v

7v

$\frac{7}{v}$

John has 4 pencils. How many more pencils does he need to get a total of 20 pencils?

Will buys 4 packages of pencils. Each package has 20 pencils. How many pencils did Will buy?

Jen gives her friend 4 pencils. She is left with 20 pencils. How many pencils did she start with?

Four teams have a total of 20 pencils and each has an equal number of pencils. How many pencils would each team have?

Mark had 12 baseball cards. He gave an equal amount to his friends. Each friend now has 6 cards.

Mark had 6 baseball cards. He was given some more for his birthday. He now has twice as many.

Mark had 6 baseball cards. He was given some more for his birthday. He now has 12 baseball cards.

Mark had 12 baseball cards. He gave some to a friend. He now has 6 baseball cards

y + 45 = 312

y ÷ 45 = 312

y - 45 = 312

y x 45 = 312

A variable can be represented by a letter.

A variable is used to represent an unknown number in an equation.

A number can be used to represent a variable.

A symbol can be used to stand for a variable.