3­1 distributive property.notebook
October 03, 2016
Lesson 3-1
Distributive
Property
Sep 11­5:56 PM
Objective: Use the distributive property to simplify algebraic expressions.
Skill/Virtue: This is necessary to simplify in order to solve complex equations or formulas. This is also the basis of understanding factoring.
Oct 3­7:48 AM
1
3­1 distributive property.notebook
October 03, 2016
­ multiply each number inside the parenthesis with the number outside the parenthesis.
Distributive Property
2(4+6)
Rewrite expression
2(4) + 2(6)
8 + 12
20
Evaluate
(4+6)2
4(2) + 6(2)
8 + 12
20
Sep 11­6:04 PM
3(4+2)
­can be solving two ways­
3(4+2)
3(6)
18
or
3(4+2)
12+6
18
*this way cannot be used when there are variables
Review: Rewrite each expression using the Distributive Property
3(­9+2)
4(12­4)
2(3­5)
(7+9)6
(­5 ­ 8)3
Sep 11­5:59 PM
2
3­1 distributive property.notebook
October 03, 2016
Using the distributive property to rewrite each expression as an equivalent expression.
*NEW* with negatives & variables mixed in now , its best to just treat every term as either positive or negative when doing the distributive property
2(­x + 5y) ­3(7a ­12b)
­8( ­11y ­ 10)
­15(e ­ 2) (8r ­ s)­10 ­4(­6p ­ 2w) 5( ­4 ­ 11)
14 (­2n ­ x)
If you want to keep practicing this distributive property, type in this URL
https://www.ixl.com/math/grade­7/distributive­property
Sep 19­2:31 PM
Summary
Objective: Use the distributive property to simplify algebraic expressions.
Skill/Virtue: This is necessary to simplify in order to solve complex equations or formulas. This is also the basis of understanding factoring.
Assignment: Workbook pg. 14
Oct 3­7:50 AM
3
3­1 distributive property.notebook
October 03, 2016
Exit Slip
Simplify using distributive property.
­4( ­x + 8)
Sep 24­8:11 AM
Warm­up
Sep 26­8:19 AM
4