lesson 1-6/ 1-7 writing algebraic expressions
DESCRIPTION
Lesson 1-6/ 1-7 Writing Algebraic Expressions. To evaluate an expression, substitute a number for a variable Example 1: Evaluate 3n + 7 when n = 3. Example 2: Evaluate n ÷ 2 + n when n = 4 (use PEMDAS). Example 3: Evaluate 9 + 3p – 5t + 3 when p = 2 and t = 1 - PowerPoint PPT PresentationTRANSCRIPT
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Lesson 1-6/ 1-7Writing
Algebraic Expressions
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To evaluate an expression, substitute a number for a variable
Example 1: Evaluate 3n + 7 when n = 3
![Page 3: Lesson 1-6/ 1-7 Writing Algebraic Expressions](https://reader030.vdocuments.mx/reader030/viewer/2022033102/56815ed6550346895dcd6fc0/html5/thumbnails/3.jpg)
Example 2: Evaluate n ÷ 2 + n when n = 4
(use PEMDAS)
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Example 3: Evaluate 9 + 3p – 5t + 3 when p = 2 and t = 1
(use PEMDAS)
![Page 5: Lesson 1-6/ 1-7 Writing Algebraic Expressions](https://reader030.vdocuments.mx/reader030/viewer/2022033102/56815ed6550346895dcd6fc0/html5/thumbnails/5.jpg)
Example 4: Evaluate m² + y/5 when m = 2 and y = 35
(use PEMDAS)
![Page 6: Lesson 1-6/ 1-7 Writing Algebraic Expressions](https://reader030.vdocuments.mx/reader030/viewer/2022033102/56815ed6550346895dcd6fc0/html5/thumbnails/6.jpg)
How would you write this expression out in
words?
n + 25
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Operation Key Words+ • Add
• More than• Sum
• Increased by
- • Subtract• Minus
• Difference of • Less than• Take away • Decreased by
x • Times• Multiplied by• Product of
÷ • Divided by• Quotient
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Quotient
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Sum
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Less than
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Product
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More than
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Difference
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Increased by
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Write each phrase as an algebraic expression
Example 5: 4 more than a number
Example 6: the product of 20 and t
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Write each phrase as an algebraic expression
Example 7: the sum of 4 times a number and
2
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Write each phrase as an algebraic expression
Example 8: 4 times the sum of a number and 2
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Write each phrase as an algebraic expression
Example 9: m plus the product of 6 and n
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Write each phrase as an algebraic expression
Example 10: 14 less than the quantity k times 6
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