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Memorizing Addition and Subtraction Facts: 5 of 5

The Doubles Subtraction & 2 Ladder "tricks" below are from Two Plus Two is Not Five by Susan Greenwald, MA Ed. Find out more about this workbook and author here.

Work through the two "tricks" below with your child. Use the links to the worksheets and fact cards in the order listed for practice and review.

Trick: Doubles Subtraction

What numbers are missing below?

Follow these three steps to practice with Doubles Subtraction and to review some of previously learned tricks.

1. Print out and try this doubles subtraction worksheet to practice on paper with the above "missing number" questions and also with Doubles and Right Next To Each Other questions.
2. Work through this review worksheet and practice more with all tricks learned so far.
3. Print out and add these two Doubles Subtraction fact cards to your collection and use them regularly to help review and memorize these facts.

Trick: Count by 2s (or 2 Ladder)

Practice Counting by 2s

Count up by 2-steps

Look - These are the same

After working through the above examples, try the four steps below to practice 2-Ladder as well as practice with all the other tricks.

1. Print out and work through this worksheet which allows the questions above to be answered on paper..
2. Try the 2 Ladder worksheet that also has questions based on the Doubles, Backwards 1, and Number +1 tricks.
3. Next, try this review worksheet to practice all the tricks learned so far.
4. Use these eight math fact cards to review and memorize the 2 Ladder math facts.

These strategies for helping to memorize addition and subtraction facts were developed by Susan Greenwald, MA Ed. and are taken from the beginning of her Two Plus Two is Not Five workbook. Susan has written three books on teaching math facts and is a sought-after speaker and presenter.

You'll find more about Susan and her work here.

The information on this page is Copyright © 2006 by Susan R. Greenwald All Rights Reserved