Unit Rates and Percent

Lesson 11

Math

Unit 2

6th Grade

Lesson 11 of 14

Objective


Find a percent of a quantity.

Common Core Standards


Core Standards

  • 6.RP.A.3.C — Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.

Foundational Standards

  • 4.NF.C.6
  • 5.NF.B.5
  • 5.NF.B.5.A
  • 5.NF.B.5.B
  • 5.NF.B.6

Criteria for Success


  1. Find a percent of a quantity using ratio reasoning and strategies, including mental math (where appropriate), double number lines, and tables.
  2. Find $$x$$% of a quantity by multiply the quantity by $$\frac{x}{100}$$.
  3. Recognize equivalent forms of $$\frac{x}{100}$$ that can make a problem more efficient or simple to solve.
  4. Find a percent of a quantity where the percent is greater than 100%.
  5. Use benchmark percentages to assess the reasonableness of answers.

Tips for Teachers


  • In Lessons 11 – 13, students engage in MP.2 as they make sense of how the part, percent, and whole relate to one another, and how they can use ratio reasoning to find any one of the values when given the other two. 

Lesson Materials

  • Calculators (1 per student) — See note from lesson 1.
Fishtank Plus

Unlock features to optimize your prep time, plan engaging lessons, and monitor student progress.

Anchor Problems

25-30 minutes


Problem 1

On a sixth-grade math test, there are 32 questions. Multiple-choice questions make up 25% of the test. How many questions on the test are multiple choice?

Show at least two different strategies you can use to solve this problem.

Guiding Questions

Create a free account or sign in to access the Guiding Questions for this Anchor Problem.

Student Response

Upgrade to Fishtank Plus to view Sample Response.

Problem 2

There are 150 students in the sixth grade, and 22% of students have an older sibling. How many students in the sixth grade have an older sibling? 

Guiding Questions

Create a free account or sign in to access the Guiding Questions for this Anchor Problem.

Student Response

Upgrade to Fishtank Plus to view Sample Response.

Problem 3

Nicky bought a hardcover book for $24. She went to an event where the author signed her book. The book is now worth 175% of its original value. How much is the signed copy of the book worth? 

Guiding Questions

Create a free account or sign in to access the Guiding Questions for this Anchor Problem.

Student Response

Upgrade to Fishtank Plus to view Sample Response.

Problem Set

15-20 minutes


Give your students more opportunities to practice the skills in this lesson with a downloadable problem set aligned to the daily objective.

Target Task

5-10 minutes


In a bag of 80 Skittles, 35% of the candies are orange. How many orange Skittles are in the bag?

Show your answer using two different strategies. 

Student Response

Upgrade to Fishtank Plus to view Sample Response.

Additional Practice


The following resources include problems and activities aligned to the objective of the lesson that can be used for additional practice or to create your own problem set.

  • Common Core Sheets Finding PercentsThese problems are all without context. The numbers could be used to write problems that include context.
  • EngageNY Mathematics Grade 6 Mathematics > Module 1 > Topic D > Lesson 28This lesson includes examples of solving all types of percent problems beyond this lesson’s specific objective. Select the items from the exercises, examples, or problem sets that align with the objective.
  • Open Up Resources Grade 6 Unit 3 Practice ProblemsLesson 13
  • EngageNY Mathematics Grade 6 Mathematics > Module 1 > Topic D > Lesson 29This lesson includes examples of solving all types of percent problems beyond this lesson’s specific objective. Select the items from the exercises, examples, or problem sets that align with the objective.
  • EngageNY Mathematics Grade 6 Mathematics > Module 1 > Topic D > Lesson 26This lesson includes examples of solving all types of percent problems beyond this lesson’s specific objective. Select the items from the exercises, examples, or problem sets that align with the objective.
  • EngageNY Mathematics Grade 6 Mathematics > Module 1 > Topic D > Lesson 27This lesson includes examples of solving all types of percent problems beyond this lesson’s specific objective. Select the items from the exercises, examples, or problem sets that align with the objective.

Next

Find the whole quantity, given a part and percent.

Lesson 12
icon/arrow/right/large

Lesson Map

A7CB09C2-D12F-4F55-80DB-37298FF0A765

Topic A: Defining Rate & Solving Rate Problems

Topic B: Measurement Unit Conversions

Topic C: Percent

Request a Demo

See all of the features of Fishtank in action and begin the conversation about adoption.

Learn more about Fishtank Learning School Adoption.

Contact Information

School Information

What courses are you interested in?

ELA

Math

Are you interested in onboarding professional learning for your teachers and instructional leaders?

Yes

No

Any other information you would like to provide about your school?

We Handle Materials So You Can Focus on Students

We Handle Materials So You Can Focus on Students

We've got you covered with rigorous, relevant, and adaptable math lesson plans for free