Use fractions, percentages, and ratios
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The idea in everyday life
Convert and compare parts, shares, changes, and scaled quantities in a practical context.
The same relationship can be represented as a fraction, decimal, percentage, or ratio depending on the decision.
One step at a time.
Use the sample or information you have permission to use. Keep your work as you go. You can pause between steps.
- 1
Name the whole and the part before choosing a representation.
- 2
Convert one example among fraction, decimal, percentage, and ratio, then explain what stays the same.
- 3
Apply the relationship to a discount, completion share, mixture, quality rate, or change and check the direction of the result.
See how it works.
Lena records 18 accurate items out of 20 as 90%, then explains that a move from 80% to 90% is a ten-percentage-point increase.
Did you cover these?
- Your work includes a conversion and comparison page with four applied examples and written interpretations.
- Check this common mistake: Changing the denominator, confusing percentage points with percent change, or comparing parts from different wholes.
- You can state the whole, part, unit, and meaning of the result in plain language.
What to finish
A conversion and comparison page with four applied examples and written interpretations.
Watch for this
Changing the denominator, confusing percentage points with percent change, or comparing parts from different wholes.
How can I tell I understand it?
You can state the whole, part, unit, and meaning of the result in plain language.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
Go to the knowledge checkOptional course overview video · same video as Lesson 1
Calculating Wages: The Pay-Rate-Hour Triangle
From TabletClass Math. Watch here or open it on YouTube .
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