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12/8/2011
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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.

Answer to #4

 Times represents multiplication

 Go to the next slide

#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!



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