Solving Proportions
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Objective
I can use proportions to solve real-world problems involving ratios and rates.
Part 1 of 3
Warm-up video
Khan Academy · 5:51Vetted channel
We don't generate video — this one is by Khan Academy on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 3
Practice
11 questions
Define what a proportion is in your own words.
Explain why setting up proportions can be helpful for solving real-world problems.
Part 3 of 3
Exit ticket
Quick comprehension check
“A clothing store is having a sale: Buy 3 shirts and get the 4th for half price. If the regular price of a shirt is $18.50, define a variable and set up a proportion to determine the average cost per shirt if you buy 4 shirts. Do not solve. A baker needs to adjust a recipe. The original recipe uses 2.25 cups of sugar for every 2.75 cups of flour. If the baker wants to use 5.5 cups of flour, define a variable and set up a proportion to find out how much sugar is needed. Do not solve. A high-speed train travels 340 miles in 2.5 hours. Assuming a constant speed, define a variable and set up a proportion to determine how long it will take to travel 816 miles. Do not solve.”
Sample answer included in the free materials
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