Transcript Variables and Expressions - Crest Ridge R-VII

Variables and Expressions
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Vocabulary
• Variable – a letter used to represent unspecified
numbers or values.
• Algebraic expression – consists of one or more
numbers and variables along with one or more
arithmetic operations.
• Factors – numbers or variables being multiplied.
• Product – the answer to a multiplication
problem.
More Vocabulary
• Evaluate – means to find the value or
solve
• Power – tells how many times the base is
used as a factor.
• 34 means that 3 (the base) will be
multiplied four times (power). (3)(3)(3)(3)
Words That Lead to Addition
• Sum
• More than
• Increased
• Plus
• Altogether
Words That Lead to Subtraction
• Decreased
• Less
• Difference
• Minus
• How many more
Words That Lead to Multiplication
• Times
• Product
• Of
• Factor
Words That Lead to Division
• Quotient
• Half of
• 1/3 of
• Seperate
Writing an Algebraic Expression
• 14 more than the number n
• 12 less the product of 7 and a number x
• 12 less than the product of 7 and a number x
More Examples
• One fourth the size of x
• The product of ¾ and a to the fifth power.
• The sum of 11 and x to the third power.
More Examples
• The quotient of x and 40
• 12 more than the product of 6 and a
number.
• http://www.phschool.com/atschool/academ
y123/english/academy123_content/wlbook-demo/ph-140s.html
Writing Verbal Expressions
• X+9
• 2x
• 52
• c + 2d
Writing Verbal Expressions
• X2 + 90
• 15 – 2x
• 4d3 – 10
THE END
http://www.phschool.com/atschool/academy
123/english/academy123_content/wlbook-demo/ph-140s.html