# 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
###### Topic Notes

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