Solving Algebraic Proportions
Presentation
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Mathematics
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9th - 10th Grade
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Practice Problem
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Easy
+4
Standards-aligned
Heather Padilla
Used 75+ times
FREE Resource
16 Slides • 8 Questions
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Solving Algebraic Proportions
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Poll
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Which one doesn't belong?
1:7 doesn't belong because ____.
2:14 doesn't belong because ___.
3:11 doesn't belong because___
7:49 doesn't belong because ___.
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Proportions & Ratios
Ratios use the symbol :
For example 5:10 is a ratio but it can also be written as a proportion
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Simplify the ratio and write it as a proportions
Simplify the ratio, (5 can be factored out of both 15 and 25)
3:5
Now that the ratio is simplified, I can write my proportion
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Multiple Choice
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Multiple Choice
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Solving Simple Proportions
Cross multiply
Divide
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Multiple Choice
Solve:
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Multiple Choice
Solve:
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Multiple Choice
Solve:
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How would we solve this proportion?
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Use what you KNOW!
Cross multiply
Simplify
Isolate the variable (add or subtract)
Simplify
Divide
Simplify
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Let's go back to this problem.....What do we do first?
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Now we simplify...What can I simplify?
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Now we need to start ISOLATING the variable....What is my next step?
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Simplify
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What is my next step?
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Now Simplify!
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Multiple Choice
Solve:
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Multiple Choice
Solve:
Solving Algebraic Proportions
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