It’s Expression Time!! Making Algebraic and Verbal Expressions EASIER to Understand

#1- Recognizing Verbal Expressions Which of the following represents a verbal expression? A. Four less than twice a number B. 2x – 4  Write the correct letter on line #1  Now, go to the next slide to see if you are correct

Answer to #1  A. is the correct choice: Four less than twice the number  Notice how in the verbal expression above, there are no numbers or symbols being used  Only words are being used  Go to the next slide

#2- Recognizing Algebraic Expressions Which of the following represents an algebraic expression? A. Four less than twice the number B. 2x – 4  Write the correct letter on line #2  Now, go to the next slide to see if you are correct

Answer to #2  B. is the correct choice: 2x – 4  Notice how in the algebraic expression above, there are no words being used  Only numbers, variables, and symbols are being used  Go to the next slide

#3 Joan is 3 times the age of her sister.  Which word in the sentence above represents a math operation?  Write your answer down on line #3  Now, go to the next slide to see if you are correct

Answer to #3  The word times represents a math operation.  Joan is 3 times the age of her sister.  Which operation does times represent?  Write your answer down on line #4  Now, go to the next slide to see if you are correct.

 Times represents multiplication  Go to the next slide Answer to #4

#5 Joan is 3 times the age of her sister. Her sister is k years old.  What do we call the k in the sentence above?  Write your answer down on line #5  Now, go to the next slide to see if you are correct.

Answer to #5  We call the k a variable  Go to the next slide

#6 Joan is 3 times the age of her sister. Her sister is k years old.  Translate the information above into an algebraic expression. Write your translation on line #6.  Now, go to the next slide to see if you are correct.

Answer to #6 3 * k years or 3k years  Notice that 3 x k cannot be a correct answer  Go to the next slide to find out why

 You don’t want to use the x symbol for multiplying when you are dealing with variables  Otherwise, it can be very confusing  Go to the next slide

#7 What are some words or phrases that can be used to represent addition in verbal expressions?  Write as many as you can think of on line #7  Now, go to the next slide to see the ones Miss Becker came up with

Answer to #7 Addition words and phrases: more than, sum, add, increased by, plus, added to, total #8- What are some words or phrases that can be used to represent subtraction in verbal expressions?  Write as many as you can think of on line #8  Now, go to the next slide to see the ones Miss Becker came up with

Answer to #8 Subtraction words and phrases: less than, minus, taken from, difference, decreased by #9- What are some words or phrases that can be used to represent multiplication in verbal expressions?  Write as many as you can think of on line #9  Now, go to the next slide to see the ones Miss Becker came up with

Answer to #9 Multiplication words and phrases: times, the product, multiplied, of, twice #10- What are some words or phrases that can be used to represent division in verbal expressions?  Write as many as you can think of on line #10  Now, go to the next slide to see the ones Miss Becker came up with

Answer to #10 Division words and phrases: quotient, divided by  Go to the next slide

Congratulations!  You have just completed a crash course in algebraic and verbal expressions!  I hope they are easier to understand now!  Good bye!