Doodles Do Algebra – Lesson 40


Update: This Lesson Is Part of Book 3 of Doodles Do Algebra: “The Basic Math of Algebra” available on Amazon.



Available in the book, “The Basic Math of Algebra, Book 3 of Doodles Do Algebra“


Today we continue with algebraic addition, only using more complex problems. In order to keep track when adding many, many terms, it is often easier to stack them in columns by type (almost like the place value ordering your child learned when she was younger). Also the distributive property (hippo hopping) is back unless your child realizes that a term can be more complex. So adding 3d +5d+7d is the same concept as adding 3(a+b) + 5(a+b) + 7(a+b) you get a total of 3+5+7, or 15 (a+b)’es.


Problem 1. 4a-7c-2b
Problem 2. 3a+x+13b+y
Problem 3. 15(a+b)
Problem 4. a2+0-xy