Lesson 18 divide unit fractions in word problems answer key

Luke had a calculator that will only display numbers less than or equal to 999,999,999. Which of the following products will his calculator display? Explain.

a.  $${792 \times 999,999,999}$$

b.  $${{1\over2} \times 999,999,999}$$

c.  $${{15\over4} \times 999,999,999}$$

d.  $${2{1\over3}\times 999,999,999}$$

e.  $${{8\over8} \times 999,999,999}$$

Student Book pages 150 - 159

CCSS.MATH.CONTENT.5.NF.B.7.C
Solve real world problems involving division of unit fractions by non-zero whole numbers and division of whole numbers by unit fractions, e.g., by using visual fraction models and equations to represent the problem. For example, how much chocolate will each person get if 3 people share 1/2 lb of chocolate equally? How many 1/3-cup servings are in 2 cups of raisins?

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Divide whole numbers by unit fractions and unit fractions by whole numbers | 5.NF.B.7a,5.NF.B.7c,5.NF.B.7

1. 
   Compare unit fractions
2. 
   Divide a unit fraction by a whole number
3. 
   Solve problems involving division of unit fractions by whole numbers

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• CCSS.Math.Content.5.NF.B.7c Solve real world problems involving division of unit fractions by non-zero whole numbers and division of whole numbers by unit fractions, e.g., by using visual fraction models and equations to represent the problem.

  • Divide unit fractions by whole numbers: word problems (Fifth grade - O.3)