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Writing Algebraic Expressions - PowerPoint PPT Presentation


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Writing Algebraic Expressions. More than Greater than Added to Sum Increased by. Fewer than Less than Subtracted from Difference Decreased by. Addition Subtraction. Multiplied Product Times Twice / double (times 2) Half (times ½) . Divide Quotient. Multiplication Division.

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Presentation Transcript
addition subtraction
More than

Greater than

Added to

Sum

Increased by

Fewer than

Less than

Subtracted from

Difference

Decreased by

Addition Subtraction
multiplication division
Multiplied

Product

Times

Twice / double (times 2)

Half (times ½)

Divide

Quotient

Multiplication Division
write the expression for each
Write the expression for each
  • Four times x

4x

  • Twelve less than y

y – 12

  • Three more than x

3 + x

  • 14 decreased by a number

14 – x

5) Six increased by three times x

6 + 3x

  • The value in cents of 6 nickels

6(5)

practice on your own
6 more than x:

y added to z:

7 less than z:

11 greater than y:

3 times b:

Sum of 3 and x:

x divided by 3:

t subtracted from q:

6 + x

y + z

z – 7

11 + y

3b

3 + x

x / 3 or

q - t

Practice on your own:
numerical vs variable expression
Numerical vs. Variable Expression
  • A variable is a letter that stands for a number
  • A variable expression is any expression that has a variable in it.
examples
Examples
  • You go to Great America with x dollars. You buy 2 drinks and each drink costs $3.00. Write an expression for how much money you have left?
  • x – 2(3.00) = x – 6 dollars