Exploring Expressions and Equations

What is a variable in mathematics?

• A type of equation

• A mathematical operation

• A symbol representing an unknown value

• A fixed number

Which of the following is an example of an algebraic expression?

• 10 - 2

• 5 + 3

• 4 * 5

• x + 7

What is the code word for the result of an addition operation?

• Quotient

• Sum

• Product

• Difference

Which code word implies subtraction?

• Product

• Quotient

• Difference

• Increased by

How should the statement 'six less than W' be written as an algebraic expression?

• W + 6

• 6 + W

• W - 6

• 6 - W

What does the phrase '2 times a number increased by five' translate to in algebraic form?

• 2x + 5

• 2 + x + 5

• 2x - 5

• 2(x + 5)

What is the correct algebraic expression for 'the quotient of a number and 31'?

• n + 31

• n / 31

• n - 31

• n * 31

What does an algebraic expression become when an equal sign is added?

• A product

• An equation

• A quotient

• A variable

If tickets to a football game cost $7 each, how would you write an equation to find the total profit (P) from selling T tickets?

• P = 7 - T

• P = T / 7

• P = 7 * T

• P = 7 + T

In the context of the table example, what operation is used to find the perimeter (P) from the side length (S)?

• P = 6S + 1

• P = S + 6

• P = 6 + S

• P = S - 6