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Multiply Using Expanded Form Practice
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4th grade
Mathematics
haleema_s_96972
7 hours ago
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  • Slide 1
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    Multiply Using Expanded Form Practice


    (it is basically the same thing as using the distributive property)

  • Slide 2
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    So far we have learned how to....



    Use the distributive property to break apart factors 4 x 12 as (4x10) + (4x2) Using the expanded form is pretty much the same thing. We just use it with even bigger numbers

  • Question 3
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    Q.

    3. What is expanded form for the number 17?

    answer choices

    (10+7)

    (1+7)

  • Question 4
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    Q.

    4. What is 147 in expanded form?

    answer choices

    (100+40+7)

    ( 1+4+7)

  • Slide 5
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    Now we can use expanded form to multiply bigger numbers!!!

    Subtitle
  • Slide 6
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    4 x 212

    212= (200 + 10 + 2)

    (4x200) + (4x10) + (4x2)

    (800) + (40) + (8)= 848

    Subtitle
  • Question 7
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    Q.

    Which shows how you can break up 2 x 43?

    answer choices

    (2x40) +(2x3)

    (2x4)+(2x3)

  • Question 8
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    Q.

    What is the product of 2 x 43?

    answer choices

    38

    86

    30

  • Slide 9
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    Using the expanded form to multiply

    • Think of the number in expanded form

    • Multiply the other factor with the value of the first digit

    • Continue multiplying

    • Add them all up

  • Slide 10
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    6 x 351

    • 351 = (300 + 50 + 1) expanded from

    • (6 x300) + (6x50) +(6x1)

    • (1800)+(300)+(6)

    • 1800+300= 2100 (think 18 +3 = 21)

    • 2100+6= 2106

    • 2106

  • Slide 11
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    3 x 363

    • 363= (300 +60 +3)

    • (3 x 300) + (3 x 60) + (3 x 3)

    • (900) + (180) + (9)

    • 1,089



  • Question 12
    30 seconds
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    Q.

    5 x 234

    answer choices

    456

    1170

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