Ch. 5 - Evaluating and Simplifying Expressions

Definition of a term.

• Parts of an expression separated by + and - signs

• The number multiplied times a product of variables or powers of variables in a term

• A term or expression with no variables

• The numbers or expressions that when multiplied produce a given product

How many terms does this expression have?
3x + 5y - 17 - 2y + x

• 3

• -17

• 5

• 1

What is a variable?

• The letter in a math expression or equation

• the number in front of a variable

• addition or subtraction sign

• the number in the top right corner of a variable or number

What is the variable in this expression?
4y-5

• y

• 4y

• 5

• 4

A coefficient is __________.

• the variable

• a constant

• an exponent

• the number that comes before the variable

What is the coefficient here?
17u + 8

• 17

• 8

• 17u

• -8

What is the coefficient in this expression?
3x+4-2

• x

• 4

• +

• 3

Definition of a constant

• Parts of an expression separated by + and - signs

• The number multiplied times a product of variables or powers of variables in a term

• A term or expression with no variables

• The numbers or expressions that when multiplied produce a given product

What is the constant in the following expression:  5x + 4 + 3y - 2x

• 5

• 5x

• 4

• 3y

In the expression, 
2x+3x+4x+5x+23+5+x
what are the constant(s)? 

• 2, 3, 4, 5, 1

• 23, 5

• x

• There isn't a constant