Subtraction Twenty to Thirty: Foundations of Mathematics for Parents and Homeschool Teachers

This book covers Subtraction of the numbers Twenty to Thirty.
Examples of every combination of numbers will guide your student to subtract any pair of numbers from zero to ten.
Then they will be given an opportunity to show that they can do all of those problems.
Finally, subtraction is reviewed by twos, threes, fours, fives, sixes, sevens, eights, nines, and tens using the Subtraction facts that they have just learned.
Once you have this book in your library, you can use any part of it over and over until you are satisfied that your student has all of the Subtraction facts solidly in their minds.