Using Strip Models to Solve Percentage Problems
To solve a percent problem with a strip model, draw the whole as one bar, mark the percent you know, and use the equal parts to find the missing value. The picture does the proportional reasoning for you.
Type the problems from this lesson and check each step.
- We are given that the shirt is on sale for 25% off and the original price is $50.
- Draw a strip divided into 100 equal parts.
- Identify the whole: The original price is $50.
- Shade in 25 parts of the strip
- Label the shaded parts: 25%
- Use the strip model to find the part or whole: 25% of $50 is $12.5
- The sale price of the shirt is $50, $12.5 = $37.5.
Using Strip Models to Solve Percentage Problems, Examples 2
Using Strip Models to Solve Percentage Problems, Examples 3
Original price was: $109.99.$54.99Current price is: $54.99.
Original price was: $109.99.$54.99Current price is: $54.99.
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