Multiplying by 10, 100 and 1000

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Intros
Lessons
  1. Introduction to Multiplying by 10, 100 and 1000
  2. Patterns in Multiplying by 10, 100 and 1000
  3. Multiplying by Multiples of 10
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Examples
Lessons
  1. Multiplying by 10, 100, 1000
    Multiply:
    1. 62 x 10
    2. 9 x 100
    3. 78 x 1000
  2. Multiplying by 10
    Multiply:
    1. 3 x 80
    2. 40 x 50
    3. 4 x 900
    4. 500 x 600
    5. 6000 x 9000
  3. Use the Pattern of Multiplying by 10, 100, 1000 to find the missing number
    Find the missing number
    1. 20 x _____ = 600
    2. 30 x ______ = 120, 000
    3. ______ x 400 = 8000
    4. 600 x _____ = 30000
    5. ______ x 70 = 210,000
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Practice
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Topic Notes
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In this lesson, we will learn:

  • The patterns in multiplying by 10, 100 and 1000 (and their multiples)

Notes:

  • A multiple of 10 is any number that has 10 as a factor (Shortcut: a multiple of 10 is any number that ends in zero)
  • To multiply a whole number and 10, 100, 1000 (or their multiples)
    • Multiply the nonzero digits
    • Count the number of zeroes in the factors
    • Write the same number of zeroes in the product

\qquad \quad Ex. 30 x 7 00 = 21000

\qquad \quad Ex. 800 x 4000 = 3,200,000