Ratios and Proportions

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Objective

I can solve a proportion to find a missing value.

Part 1 of 3

Warm-up video

Math with Mr. J · 5:06Vetted channel

We don't generate video — this one is by Math with Mr. J 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

7 questions

1

Write the ratio of cats to dogs in a pet shelter that has 12 cats and 8 dogs, using all three methods described in the video (using "to", a colon, and a fraction).

2

In a classroom, there are 15 students who like pizza and 10 students who like tacos. What is the ratio of students who like pizza to the total number of students in the classroom? Express the ratio in simplest form.

Part 3 of 3

Exit ticket

Quick comprehension check

A bakery makes 20 cakes and 30 pies each day. Write the ratio of cakes to pies in simplest form. In a garden, there are 15 roses, 5 lilies, and 10 tulips. What is the ratio of roses to the total number of flowers in the garden, expressed in simplest form?

Sample answer included in the free materials

Get the materials

Teacher guide, student handout, and slides — free, in Google Docs format

  • Teacher Guide

    Complete lesson plan with answer keys and alternate activities

  • Student Handout

    Printable worksheet

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