Doodles Do Algebra – Lesson 35


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 a brief review of what your child has learned over the last weeks, as well as a review of basic arithmetic.

It should be a gentle reminder of properties of numbers that he will be using in earnest in the weeks to come.


  1. 49
  2. 1 (coefficient is the number accompanying the xy term, in this case it is 1. If the question were 2xy, the coefficient would be 2)
  3. 30 (negative times and negative is a positive)
  4. -10 (positive times, or divided by, a negative is a negative)
  5. -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, or any integer bigger. (remember whole numbers are positive only and integers are positive and negative whole numbers)

Thanks and have a great weekend!