Exploring Parts of an Expression

Why is it recommended to use different colors when learning about algebraic expressions?

• To use up old markers

• To make the lesson more fun

• To help distinguish between different parts of an expression

• To make the lesson longer

What is an algebraic expression?

• A sentence with numbers and letters

• An expression with variables, coefficients, and constants separated by addition and subtraction signs

• A paragraph describing a math problem

• A list of numbers

Which of the following is a variable?

• 12

• X

• 3

• 5

What is a constant in an algebraic expression?

• A term with the same variable and exponent

• A number multiplied by a variable

• A number by itself

• A letter representing an unknown

Which of the following is a term in the expression 4x^2 - 3x + 12?

• 4x^2

• x^2

• 4

• 3

What is a coefficient?

• A letter representing an unknown

• A number multiplied by a variable

• A term with the same variable and exponent

• A number by itself

In the term 3y, what is the coefficient?

• 3y

• None

• y

• 3

What are like terms?

• Letters representing unknowns

• Terms with the same variable and exponent

• Terms with different variables

• Numbers by themselves

Which of the following pairs are like terms?

• 12 and x

• 7x and -2x

• 3 and 3x

• 7x and 5y

Why is it important to take notes during the lesson?

• To refer back to them when needed

• To remember everything without looking back

• To have something to do

• To make the lesson longer