Doodles Do Algebra – Lesson 67


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’s lesson is just more practice dividing monomials but now we have changed the wording: instead of ‘how often is something contained in another thing”, we are saying “divide one thing by another”. Same action, just different wording.


1. 5ac (because 15/3=5, and a^3/a^2=a*a*a/a*a=a because a/a=1 just like 2/2=1, and b/b=1, and c/1=c)

2. -9xy^2 (now we are including negative numbers that have the same properties as multiplication – positive divided by negative is negative, negative divided by positive is negative, and negative divided by negative is positive.)

3. 3a^2

4. 5bx

5. ax^2

6. -2a^2x^2

7. 3x^2

8. -6ac^2y

9. 2cxy^2

10. 5cx^5y