Lesson
Multiplying Mixed Numbers
7 days ago by
latoyamaxwell_84247
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  • Slide 1
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    Multiply Mixed Numbers

    Learning Goal: Use models, equations, and previously learned strategies to multiply mixed numbers.

  • Slide 2
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    What is a Mixed Number?

    A number that is greater than one whole and is made of a whole number plus a fraction

  • Question 3
    30 seconds
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    Q.

    Select the example of a mixed number below:

    answer choices

    12\frac{1}{2}


    103\frac{10}{3}

    2 132\ \frac{1}{3}

  • Slide 4
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    Multiplying Mixed Numbers

    Step 1: Change each number to an improper fraction.


    Step 2: Multiply the numerators and then the denominators.


    Step 3: Convert back to mixed number


    Step 4: Check to be sure the answer makes sense.

  • Slide 5
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    Finding Value of Numerical Expressions (PEMDAS)


    • Step I: Simplify the operations inside grouping symbols. 

    • Step II: Solve multiplication and division from left to right. 

    • Step III: Solve addition and subtraction from left to right.

  • Question 6
    30 seconds
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    Q.

    Change the mixed number below to an improper fraction.

     2 452\ \frac{4}{5}  

    answer choices

     142\frac{14}{2}  

     115\frac{11}{5}  

     145\frac{14}{5}  

  • Slide 7
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    Solve and Share Task

    Look at the ingredients needed to make Josie's special pancakes. How much pancake mix and milk will you need if you want to double the recipe? To triple the recipe? 

                            Josie's Pancake Recipe

     2 142\ \frac{1}{4}  cups pancake mix
     1 egg
     1 231\ \frac{2}{3}  cups milk
     34\frac{3}{4}  teaspoon vanilla

  • Slide 8
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    Solve and Share Task

    Look at the ingredients needed to make Josie's special pancakes. How much pancake mix and milk will you need if you want to double the recipe? To triple the recipe? 

                            Josie's Pancake Recipe

     2 142\ \frac{1}{4}  cups pancake mix
     1 egg
     1 231\ \frac{2}{3}  cups milk
     34\frac{3}{4}  teaspoon vanilla

  • Question 9
    30 seconds
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    Q.

     2 34  ×  82\ \frac{3}{4}\ \ \times\ \ 8  

    Solve this problem

    answer choices

    22

     114\frac{11}{4}  

     81\frac{8}{1}  

  • Slide 10
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    Evaluating Numerical Expressions (PEMDAS)

    • Step I: Simplify the operations inside grouping symbols. 

    • Step II: Solve multiplication and division from left to right. 

    • Step III: Solve addition and subtraction from left to right.

  • Slide 11
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    Introductory Task


    What is the value of the expression shown below?


    30- (5 + 7) x 2


    SHARE YOUR THINKING!!!

  • Question 12
    30 seconds
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    Q.

    What is the value of 3 (14-5) + 2?

    answer choices

    29

    27

    33

  • Slide 13
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    Solve and Share


    Kyra purchased a pack of 20 erasers. She kept 8 erasers and equally divided the rest among three friends. Which expression tells how many erasers each friend received?


    Share your thinking!!!

  • Question 14
    45 seconds
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    Q.

    Which expression has the same value as (2 +3) x (3 + 1) ?

    answer choices

    (2 x 5) + (5 x 2)

    3 + ( 2 x 1) + 3

    ( 2 x 3) + ( 3 + 1)

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