Compare two fractions with unrelated numerators and denominators by finding common units or number of units.
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As the Fractions Progressions states, “it is not necessary to find a least common denominator to calculate sums of fractions, and in fact the effort of finding a least common denominator is a distraction from understanding algorithms for adding fractions” (NF Progressions, p. 11). One can extend this rationale to finding a least common denominator to compare fractions and thus should not be overemphasized. However, because finding a least common denominator connects the supporting work of gaining familiarity with factors and multiples (4.OA.4) with fraction equivalence and comparison (4.NF.A), the idea is discussed briefly, particularly in Anchor Task #3. However, because finding a least common denominator connects the supporting work of gaining familiarity with factors and multiples (4.OA.4) with fraction equivalence and comparison (4.NF.A), the idea is discussed briefly, particularly in Anchor Task #3.
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Would you rather have the leftover brownies in Scenario A or Scenario B? The pans in which the brownies were cooked are the same size.
Compare the following fractions.
a. $${{2\over3}}$$ and $${{5\over8}}$$
b. $${{7\over4}}$$ and $${{9\over5}}$$
Compare the following fractions.
a. $${{7\over12}}$$ and $${{5\over8}}$$
b. $${{13\over10}}$$ and $${{5\over4}}$$
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Compare the following fractions by writing <, >, or = in the blank.
1. $${{3\over4}}$$ _____________ $${{4\over5}}$$
2. $${{4\over6}}$$ _____________ $${{3\over5}}$$
Grade 4 Mathematics > Module 5 > Topic C > Lesson 15 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.?