Multiplication and Division, Part 1
Lesson 16
Objective
Solve two-step word problems involving all four operations and assess the reasonableness of answers.
Common Core Standards
Core Standards
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3.OA.D.8 — Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding. This standard is limited to problems posed with whole numbers and having whole-number answers; students should know how to perform operations in the conventional order when there are no parentheses to specify a particular order (Order of Operations).
Foundational Standards
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3.NBT.A.2
Criteria for Success
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- Make sense of a three-act task and persevere in solving it (MP.1).
- Solve two-step word problems involving addition, subtraction, multiplication, and division (MP.4).
- Assess the reasonableness of an answer (MP.1).
Tips for Teachers
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Remote Learning Guidance
This lesson does not have any identified priority Anchor Tasks, but students should complete the Problem Set independently rather than skipping the lesson entirely. Find more guidance on adapting our math curriculum for remote learning here.
Anchor Tasks
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Problem 1
Act 1: Watch the following video: Sugar Act 1.
How many sugar packets are there?
Guiding Questions
References
Hey Look! I Made a 3-Act! is made available by Joe Schwartz on Exit 10A. Accessed Oct. 10, 2018, 4:10 p.m..
Modified by Fishtank Learning, Inc.Problem 2
Act 2: Use the following information to solve:
Guiding Questions
References
Hey Look! I Made a 3-Act! is made available by Joe Schwartz on Exit 10A. Accessed Oct. 10, 2018, 4:10 p.m..
Modified by Fishtank Learning, Inc.Problem 3
Act 3: Reveal the answer:
There are 110 packets of sweetener.
Guiding Questions
References
Hey Look! I Made a 3-Act! is made available by Joe Schwartz on Exit 10A. Accessed Oct. 10, 2018, 4:10 p.m..
Modified by Fishtank Learning, Inc.Problem 4
Act 4 (sequel):
Ms. Ruizdeporras took 75 packets to put in Building B’s teacher room. Then, teachers in Building A used 5 packets of sweetener per day before it ran out. How many days did the sweetener last before it ran out?
Guiding Questions
Problem Set & Homework
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- Problem Set Answer Key
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- Homework Answer Key
Discussion of Problem Set
- What made #3 a bit more difficult than the previous problems? What information did you use first to solve? Where did that information show up in the problem?
- What made #6 a bit more difficult than the previous problems?
- Did anyone attempt the challenge in #7? How did you approach solving?
Target Task
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Ms. Egeregor buys 27 books for her classroom library. She buys an equal number of fiction, nonfiction, and poetry books. She shelves all of the poetry books first. How many books does Ms. Egeregor have left to shelve? Show or explain your work.
References
Grade 3 Mathematics > Module 1 > Topic F > Lesson 21 of the New York State Common Core Mathematics Curriculum from EngageNY and Great Minds. © 2015 Great Minds. Licensed by EngageNY of the New York State Education Department under the CC BY-NC-SA 3.0 US license. Accessed Dec. 2, 2016, 5:15 p.m..
Modified by Fishtank Learning, Inc.Mastery Response
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Additional Practice
Unit Practice
With Fishtank Plus you can access our Daily Word Problem Practice and our content-aligned Fluency Activities created to help students strengthen their application and fluency skills.
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