Writing Equations from Word Problems

The video tutorial introduces sixth-graders to equations and inequalities, focusing on writing equations from word sentences. It explains the difference between expressions and equations, emphasizing the use of equal signs. The tutorial provides examples of converting English sentences into mathematical equations, highlighting key terms like 'is' and 'equals.' It also covers common mistakes in subtraction and division, and includes practice problems and real-life applications to reinforce learning.

What is the main goal of this lesson?

• To describe how to write word sentences as equations.

• To learn how to write full English sentences.

• To memorize mathematical formulas.

• To understand the history of mathematics.

Which of the following best describes an equation?

• A sentence that only contains numbers.

• A collection of numbers and letters.

• A mathematical sentence that uses an equal sign to show equality.

• A mathematical sentence without an equal sign.

In the sentence 'The sum of a number n and seven is 15', what does 'sum' indicate?

• Multiplication

• Subtraction

• Division

• Addition

When converting 'A number Y decreased by 4 is 3' into an equation, what operation is used?

• Multiplication

• Subtraction

• Division

• Addition

In algebra, why is the multiplication sign often omitted?

• It is unnecessary in all cases.

• It can be confused with the variable X.

• It is replaced by division.

• It is only used in advanced mathematics.

What does the term 'product' indicate in a word problem?

• Division

• Multiplication

• Subtraction

• Addition

In the problem 'The quotient of a number Q and 4 is 12', what operation is used?

• Addition

• Subtraction

• Multiplication

• Division

If 24 students are eliminated from a spelling bee and 96 remain, how would you write an equation to find the starting number of students?

• S + 24 = 96

• S - 24 = 96

• S / 24 = 96

• S * 24 = 96

You enter an elevator and go down 7 floors, exiting on the 10th floor. How would you write an equation to find the floor you started on?

• X + 7 = 10

• X - 7 = 10

• X / 7 = 10

• X * 7 = 10

If you and a friend have $52 together and your friend has $28, how would you write an equation to find out how much you have?

• X + 28 = 52

• X - 28 = 52

• X * 28 = 52

• X / 28 = 52