Estimate multi-digit quotients by rounding numbers to compatible numbers.
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As noted in the Progressions, “estimating the quotients if a new aspect of dividing by a two-digit number” (NBT Progression, p. 18). Thus, Lesson 12 focuses on the idea of estimating quotients with compatible numbers before computing them in future lessons.
If you need to adapt or shorten this lesson for remote learning, we suggest prioritizing Anchor Task 2 (benefits from worked example). Find more guidance on adapting our math curriculum for remote learning here.
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Martin and LuAnn are trying to estimate the quotient $${132\div71}$$. Martin uses $${100\div 70}$$ to estimate the quotient. LuAnn uses $${140\div 70 }$$ to estimate the quotient. Whose estimate do you agree with? Explain. If you don’t agree with either, explain how you would estimate in this problem.
Grade 5 Unit 3 Lesson 3 Estimate by Rounding to Compatible Numbers is made available by Achievement First as a part of their Open Source web portal under a CC BY 4.0 license. Copyright © 1999-2017 Achievement First. Accessed Dec. 5, 2017, 4:06 p.m..
Modified by The Match Foundation, Inc.Estimate the following quotients.
Grade 5 Mathematics > Module 2 > Topic E > Lesson 18 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 The Match Foundation, Inc.Estimate the following quotient.
$${9,215 \div95}$$
Grade 5 Mathematics > Module 2 > Topic E > Lesson 18 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 The Match Foundation, Inc.?
Estimate the quotient for the following problems:
1. $${151\div39}$$ |
2. $${481\div68}$$ |
3. $${3,704\div53}$$ |
4. $${4,819\div68}$$ |
Grade 5 Mathematics > Module 2 > Topic E > Lesson 17 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 The Match Foundation, Inc.Grade 5 Mathematics > Module 2 > Topic E > Lesson 18 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 The Match Foundation, Inc.?
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