Solving Word Problems with Equations

The video tutorial by Mr. Pi covers the concept of statements of equality and how to verify them. It introduces key vocabulary such as variables and equations, and provides exercises to practice these concepts. The tutorial includes problem-solving examples involving posters and light fixtures, as well as calculating the ages of sisters using algebra. The lesson emphasizes the importance of understanding expressions and equations, and concludes with a summary and final instructions for students.

What is a variable in mathematical terms?

• A mathematical operation

• A fixed number

• A symbol representing a number

• A type of equation

Which of the following best describes an equation?

• A statement of equality between two expressions

• A statement with only numbers

• A sentence with no variables

• A mathematical operation

In the poster problem, what is the distance between the posters and the wall edges?

• 5 feet

• 4 feet

• 3 feet

• 2 feet

How do you convert 25 inches to feet?

• Divide by 10

• Divide by 12

• Multiply by 12

• Multiply by 10

What is the solution for the distance between the wall scone lights in feet?

• 1 and 1/2 feet

• 2 and 1/6 feet

• 3 feet

• 2 feet

What is the value of Y when the equation 3Y + 50 = 128 is solved?

• 24

• 25

• 26

• 27

How do you verify if a number is a solution to an equation?

• By guessing

• By substituting the number into the equation

• By adding the number to both sides

• By multiplying the number by the equation

If the youngest sister is X years old, how old is the oldest sister?

• X + 4

• X + 1

• X + 2

• X + 3

What is the sum of the ages of the three sisters if the youngest is 14?

• 43

• 44

• 42

• 45

What is the first step in solving a word problem involving equations?

• Convert units

• Write an expression

• Guess the answer

• Draw a diagram