5.NF.A.1

5.NF.1. Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)

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Ages: 10 - 14
482 Views:
Solve word problems with addition of fractions
From YouTube, produced by Learn Zillion Video
The video explains the steps to solving a word problem involving addition of unlike fractions using key words, estimation, and fraction bars. The problem presented is: Sally picked up 1/4 bag of shells today and 1/2 a basket of shells yesterday. How ... [more]
Found by wendyofoz in 5.NF.A.1
October 22, 2012 at 10:54 PM
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Not Right For WatchKnowLearn
Ages: 11 - 18
5911 Views:
Math Snacks: Number Rights 2 (Number Line and Fractions)
From YouTube, produced by New Mexico State University
Whole numbers are no better than any others! Practice plotting values on the number line as a passionate activist rises up and demands equity for all numbers, including fractions and decimals. Number Rights addresses number and operations standards a... [more]
January 10, 2012 at 11:06 PM
Comments: 2
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Not Right For WatchKnowLearn
Ages: 9 - 15
4896 Views:
Adding Fractions with Unlike Denominators
From YouTube, produced by LearnBetterNow.com
In this video they show how to add fractions with unlike denominators. The LCD or lowest common denominator is found and the fractions are converted. The LCD method is shown to students. Then the fractions are added. At the end of the video there are... [more]
Found by Barb in 5.NF.A.1
August 4, 2009 at 07:32 PM
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Not Right For WatchKnowLearn
Ages: 9 - 15
3519 Views:
Adding & Subtracting Fractions
From YouTube, produced by LearnBetterNow.com
Instructor uses a whiteboard to demonstrate how to add and subtract fractions. In the first part of the video they add with like denominators, then they reduce the fraction. Then they add with unlike denominators, first they find the lowest common mu... [more]
Found by Barb in 5.NF.A.1
August 4, 2009 at 07:28 PM
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Not Right For WatchKnowLearn
Ages: 9 - 15
3444 Views:
Adding Mixed Numbers with Uncommon Denominators
From YouTube, produced by Davitily
The instructor uses an electronic chalkboard to demonstrate how to add mixed numbers with uncommon denominators.  One example is modeled using astep by step approach to walk the learner through this process of adding the whole numbers first and then ... [more]
Found by RonnieBurt in 5.NF.A.1
May 2, 2010 at 07:05 PM
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Not Right For WatchKnowLearn
Ages: 8 - 12
3042 Views:
Grade 4 Fractions
From SlideShare, produced by Miss I
This sildeshow could be for grades 4 and 5. There are visual representations of pizza pies in this slideshow that may help the visual learner. There are eleven slides, but no sound. The teacher or student may pause the slideshow for clarification/dis... [more]
July 21, 2011 at 01:44 PM
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Not Right For WatchKnowLearn
Ages: 10 - 15
2291 Views:
Adding and Subtracting Fractions / Mixed Numbers: Example 3
From YouTube, produced by Patrick
Adding and Subtracting Fractions / Mixed Numbers: Example 3. In this video, the instructor shows how to add / subtract fractions that have different denominators at the beginning. (04:02)
February 20, 2012 at 02:26 PM
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Not Right For WatchKnowLearn
Ages: 10 - 15
1750 Views:
Adding and Subtracting Fractions / Mixed Numbers: Example 4
From YouTube, produced by Patrick
Adding and Subtracting Fractions / Mixed Numbers: Example 4. Here we look at another subtraction problem involving fractions. (01:29)
February 20, 2012 at 02:24 PM
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Not Right For WatchKnowLearn
Ages: 8 - 14
3705 Views:
The Four Rules of Fractions
From SlideShare, produced by Steve Bishop
The four rules - adding, subtracting, division and multiplication - with fractions. This is an excellent slideshow. The teacher or the student can control how fast the presentation should be. The presenter gives the rule in one slide and the student ... [more]
July 21, 2011 at 01:29 PM
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Not Right For WatchKnowLearn
Ages: 7 - 13
2604 Views:
How to Add Simple Fractions
From YouTube, produced by Shadows of Darkness
A simple learning tool to learn how to add fractions. This animated feature shows the viewer how to add simple fractions, those with like AND unlike denominators. It also teaches the vocabulary words numerator and denominator. Run time 03:52.
Found by lfreeman in 5.NF.A.1
November 28, 2010 at 02:29 PM
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