6.NS.1. Interpret and compute quotients of fractions, and solve word problems involving division of fractions by fractions, e.g., by using visual fraction models and equations to represent the problem. For example, create a story context for (2/3) ÷ (3/4) and use a visual fraction model to show the quotient; use the relationship between multiplication and division to explain that (2/3) ÷ (3/4) = 8/9 because 3/4 of 8/9 is 2/3. (In general, (a/b) ÷ (c/d) = ad/bc.) How much chocolate will each person get if 3 people share 1/2 lb of chocolate equally? How many 3/4cup servings are in 2/3 of a cup of yogurt? How wide is a rectangular strip of land with length 3/4 mi and area 1/2 square mi? Compute fluently with multidigit numbers and find common factors and multiples.
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This video shows how to multiply and divide fractions by multiplying the numerators and denominators — even if the fractions have unlike denominators. Run time 01:49.
November 27, 2010 at 08:39 PM


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Ages: 10  14
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Learn to solve word problems involving division of whole numbers by fractions by using picture models. This link includes 4 video lessons. Lesson one (4:07) solves a word problem with number sentence 6 divided by 1/2. Lesson two (4:00) solves the pro...blem 1/2 by 3. Lesson three (4:26) solves 1/2 divided by 1/8. Lesson four (3:41) solves the problem 1 1/2 divided by 1/2. The instructor uses picture models to show how to solve each problem. Very clear instruction and illustrations in these video lessons. (04:26)
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October 28, 2012 at 02:36 PM


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Fractions  Multiplying and Dividing. Numerous numerical and variable expressions are shown. (06:33)
August 10, 2011 at 07:47 AM
