Final Review IM1

What are variables in math?

• Letters

• Numbers

• Expressions

A variable represents what is ______________. 

• the answer
• the operation
• the difference
• unknown 

A variable is . . .

• an awesome number

• a number represented by a letter

• an infinite number

• a number multiplied by another number

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.

A constant is . . .

• a letter

• a math or science mystery

• a number

• a variable

The number or constant in this is expression is ____ ? 
6 + n 

• n
• +
• 6
• =

What are the coefficients in an expression?

• The numbers multiplied by the variables

• The operations in the expression

• The constants in the expression

• The exponents in the expression