Part-to-Part and Part-to-Whole Ratios
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Objective
I can identify and write part-to-whole and part-to-part ratios from real-world examples, such as the ratio of boys to girls in our class or the ratio of apples to total fruit in a basket.
Part 1 of 3
Warm-up video
Unknown Channel · 5:00
We don't generate video — this one is by Unknown Channel 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
2 questions
In a class of 30 students, 12 students play a musical instrument. What is the part-to-whole ratio of students who play an instrument to the total number of students in the class? What is the part-to-part ratio of students who play an instrument to those who do not?
A bakery sells cookies and muffins. On a particular day, they sold 25 cookies and 15 muffins. What is the part-to-part ratio of cookies sold to muffins sold? What is the part-to-whole ratio of muffins sold to the total number of baked goods sold?
Part 3 of 3
Exit ticket
Quick comprehension check
“In a fruit basket, there are 5 oranges and 7 bananas. What is the part-to-part ratio of oranges to bananas? What is the part-to-whole ratio of oranges to the total number of fruits? In a classroom, there are 10 students who like to play soccer and 8 students who like to play basketball. What is the part-to-part ratio of students who like soccer to students who like basketball? What is the part-to-whole ratio of students who like soccer to the total number of students who like either sport? A garden has 6 roses and 4 tulips. What is the part-to-part ratio of roses to tulips? What is the part-to-whole ratio of tulips to the total number of flowers?”
Sample answer included in the free materials
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Teacher Guide
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