Exploring Algebraic Expressions and Operations

Mrs. Marcelis and Goat Le teach students how to translate verbal phrases into algebraic expressions by defining variables, identifying operations, and using mathematical symbols. The lesson includes examples such as adding to an unknown quantity, multiplying by a factor, and dividing among groups. The video concludes with a discussion on more complex expressions involving multiple operations.

What is the first step in writing an algebraic expression?

• Combine mathematical symbols

• Choose a variable to represent an unknown quantity

• Find the final answer

• Evaluate the expression

How do you represent '8 more than Ryan earned' in algebraic form?

• 8 - x

• 8 * x

• 8 + x

• 8 / x

Which variable is used to represent the number of goats last year?

• G

• X

• C

• T

How is 'six times as many goats as last year' best written in algebraic form?

• 6 * G

• 6.G

• 6G

• G6

What is the correct algebraic expression for 'a batch of cookies divided among eight people'?

• 8 / C

• 8 * C

• C * 8

• C / 8

How do you write '$7 less than Tabitha earned' in algebraic form?

• 7 + T

• T - 7

• T + 7

• 7 - T

Which of the following represents 'half as many video games as Mark has'?

• V / 2

• V * 2

• 2 / V

• 2 * V

What is the algebraic expression for '$3 more than four times the cost of a pretzel'?

• 3 + 4C

• 4C + 3

• 3C + 4

• 4 + 3C

How do you represent '$75 security deposit and $90 an hour to rent a Jeep'?

• 75 + 90H

• 90 + 75H

• 90H + 75

• 75H + 90

What does the variable 'H' represent in the expression for renting a Jeep?

• The number of hours

• The security deposit

• The total cost

• The hourly rate