5.NF.2. Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.
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Ages: 10  14
570 Views:

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 ...many does Sally have all together?
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October 22, 2012 at 10:54 PM


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Ages: 10  14
311 Views:

This video explains how to solve word problems involving subtraction of unlike mixed number fractions by using area models. The problem presented is: Adrian knows he needs to eat 5 servings of veggies each day. So far, he has eaten 4 6/8 cups today. ...How much more does he need to eat? The video is high quality and walks through 4 important steps to solve the problem, beginning with understanding the problem: what are we solving for?
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October 22, 2012 at 11:33 PM


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Ages: 10  14
277 Views:

This video lesson teaches how to solve word problems involving subtraction of unliked mixed fractions by using number lines. It begins by reviewing how to subtract unlike mixed number fractions. It also shows a common mistake students make by represe...nting a whole number as an incorrect fraction. The word problem presented is solved using four steps, beginning with understanding the problem: what are we solving for? (5:54)
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October 22, 2012 at 11:41 PM


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Ages: 10  14
259 Views:

This well produced video teaches 4 steps (beginning with understanding what we are solving for) as we learn to solve word problems involving subtraction of unlike fractons by using fraction bars. The problem given is: Tammy's construction company bou...gh 19/10 bags of gravel and used 4/5 of a bag. How much gravel does the company have left?
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October 22, 2012 at 11:27 PM


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Ages: 10  14
257 Views:

This is a great video showing how to solve word problems involving addition of unlike mixed number fractions by using area models. The narrator and animations are clear and point out each important step in order to solve the problem. The problem pres...ented is: Mabel did
2 4/7 of her homework now and will finish the other 3 pages later. How many total pages of homework does she have?
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October 22, 2012 at 11:18 PM


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Ages: 10  14
244 Views:

This video teaches how to solve word problems with addition of unlike fractions by using number lines. The word problem presented is: Judy had 2 1/2 blue postit notes and 2 4/6 pink ones. How many does Judy have?
October 22, 2012 at 11:09 PM


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Ages: 11  18
6613 Views:

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...s well as the process standard, as established by the National Council of Teachers of Mathematics (NCTM). It supports students in: Comparing and ordering fractions, decimals, and percents efficiently and finding their approximate locations on a number line. Building new mathematical knowledge through problemsolving. Solving problems that arise in mathematics and in other contexts. (03:09)
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January 10, 2012 at 11:06 PM


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Ages: 9  15
5249 Views:

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... problems for the students to practice on. Video is good quality and good for all students as a review or initial learning of the topic. (04:05)
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August 4, 2009 at 07:32 PM


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Ages: 10  15
2680 Views:

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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Ages: 10  15
1994 Views:

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
