Individuals and Variables

What are variables in math?

• Letters

• Numbers

• Expressions

What are the variables in the following expression?

• 3, 4, 1 and 7

• z, x and y

• + and -

• 15

In this expression what is the variable? 
5 + y 

• q

• +

• 5

• y

What is the variable in 3x - 5

• x

• 5

• 3

Write the following statement as a mathematic expression with variable(s):

> The difference of 16 and K is seven.

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Solve the following expression.
x = 4
(39 - x)  ÷ 7

• 6

• 5

• 7

• 9

What is a variable?

• A number that represents a shape

• A letter that represents a number

• A letter that represents a letter

• I dont know

Which of the following shows a variable?

• g + 7

• g + 7 = 10

• g

• 7g