5.NF.B: Use previous understandings of multiplication and division to multiply and divide fractions.

Use previous understandings of multiplication and division to multiply and divide fractions.

5.NF.B.3Interpret a fraction as the number that results from dividing the whole number numerator by the whole number denominator (a/b = a b). Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers. For example, interpret 3/4 as the result of dividing 3 by 4, noting that 3/4 multiplied by 4 equals 3, and that when 3 wholes are shared equally among 4 people, each person has a share of size 3/4. If 9 people want to share a 50-pound sack of rice equally by weight, how many pounds of rice should each person get? Between what two whole numbers does your answer lie?5.NF.B.4Apply and extend previous understandings of multiplication to multiply a fraction by a whole number and a fraction by a fraction.5.NF.B.5Interpret multiplication as scaling (resizing), by:5.NF.B.6Solve problems in real-world contexts involving multiplication of fractions, including mixed numbers, by using a variety of representations including equations and models.5.NF.B.7Apply and extend previous understandings of division to divide unit fractions by whole numbers and whole numbers by unit fractions.
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