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.
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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.?
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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.?