Curriculum  /  Math  /  5th Grade  /  Unit 6: Multiplication and Division of Decimals  /  Lesson 23

Multiplication and Division of Decimals

Lesson 23

Math

Unit 6

5th Grade

Lesson 23 of 23

Objective

Solve real-world problems involving measurement conversions.

Common Core Standards

Core Standards

  • 5.MD.A.1 — Convert among different-sized standard measurement units within a given measurement system (e.g., convert 5 cm to 0.05 m), and use these conversions in solving multi-step, real world problems.

Foundational Standards

  • 4.MD.A.1
  • 4.MD.A.2

Criteria for Success

  1. Make sense of a three-act task and persevere in solving it (MP.1).
  2. Solve multi-step word problems involving measurement conversions (MP.4).
  3. Assess the reasonableness of a solution by rounding to estimate or by checking a solution using multiplication (MP.1).

Tips for Teachers

Lesson Materials

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Anchor Tasks

25-30 minutes

Problem 1

Act 1: Watch the video The Fish Tank (Act 1).

a.   What do you notice? What do you wonder?

b.   How long will it take to fill the fish tank? Make an estimate.

Guiding Questions

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Student Response

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References

Questioning My Metacognition The Fish Tank — Act 1 video: the Fish Tank (Act-1)

The Fish Tank by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed Sept. 23, 2019, 1 a.m..

Problem 2

Act 2: Use the following information to determine how long it will take to fill up the fish tank.

  • It takes 10 seconds to fill 1 cup.
  • The dimensions of the fish tank are:

  • A quart is 58 cubic inches.

Guiding Questions

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Student Response

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References

Questioning My Metacognition The Fish Tank — Act 2 image

The Fish Tank by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed Sept. 23, 2019, 1 a.m..

Modified by Fishtank Learning, Inc.

Problem 3

Act 3: Watch the video The Fish Tank (Act 3) to see how long it took to fill the fish tank.

Was your estimate reasonable? Why or why not?

Guiding Questions

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Student Response

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References

Questioning My Metacognition The Fish Tank — Act 3 video: the Fish Tank (Act 3)

The Fish Tank by Graham Fletcher is made available on Questioning My Metacognition under the CC BY-SA 4.0 license. Accessed Sept. 23, 2019, 1 a.m..

Problem 4

Act 4: If you doubled all of the dimensions of the fish tank, how long would it take to fill it?

Guiding Questions

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Student Response

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Problem Set

15-20 minutes

Discussion of Problem Set

  • How did you solve #5?
  • How did you solve #7? How did you convert from cups to gallons? What is a cup expressed as a fraction of a gallon? How did you figure that out?
  • How did you solve #11? How is this problem similar to problems in previous units related to volume? How is it different?
  • How did you solve #13? How is this problem similar to problems in previous units related to line plots? How is it different?

Target Task

5-10 minutes

Problem 1

Owen lives 1.2 kilometers from school. Lucia lives 0.86 kilometers from school. Ignacio lives 90 meters from school. If Owen, Lucia, and Ignacio all walk to and from school, how far, in kilometers, did they all walk in total?

Student Response

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Problem 2

Manouel is driving to visit his brother. He listens to a podcast on the way that is 57 minutes long. The drive to his brother’s house is $$1\tfrac{3}{4}$$ hours long. How much longer, in minutes, is the drive than the podcast?

Student Response

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Additional Practice

The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.

Word Problems and Fluency Activities

Word Problems and Fluency Activities

Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.

Lesson Map

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

Topic A: Multiplying Decimals

Topic B: Dividing Decimals

Topic C: Decimal Real-World Problems

Topic D: Measurement Conversion

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