Distributive Property Part 1 - pos numbers

Distributive Property Part 1 - pos numbers
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Part of video series Operations with Polynomials
Taught by YourMathGal

Meets NCTM Standards:

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Distributive property of multiplication over addition, part 1. No neg numbers or subtraction.

• What is the distributive property of multiplication over addition?
• Why does m*n = m(n) = (m)n = (m)(n) = mn?
• Why does a(b + c) = ab + ac?
• How can you simplify 3(4 + 5) using the distributive property?
• If you want to buy 13 pencils at 7 cents each, how could you find 7*13 using the distributive property to figure out how much they cost?
• How can you simplify 5(x + 8) using the distributive property?
• How do you write 4(m + 13) without parentheses using the distributive property?
• What does 6(2m + 7) simplify to without parentheses?
• How do you simplify 8(3m + 4)?
• How could you simplify 3(x + 8) + 14 using the distributive property?
• What does 5(2x + 5) + 9 simplify to?
This lesson is a very basic introduction to the distributive property of multiplication over addition. Some example problems are done to illustrate how this property works. Only addition is included in these examples.
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Reviewed by MathVids Staff on October 10, 2009.