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Memorizing Addition and Subtraction Facts: 4 of 5

Home > Resources > Addition and Subtraction Facts > Doubles Subtraction & Right Next To Each Other

The Doubles Subtraction & Right Next To Each Other "tricks" below are from Two Plus Two is Not Five by Susan Greenwald, MA Ed. You can learn more about this workbook and author here.

Work through the two tricks below with your child and then use the links to the worksheets and fact cards for practice and review.

Trick: Doubles Subtraction

illustration of how doubles addition relates to subtraction of doubles

Learn Doubles Subtraction. What are the missing numbers below?

5
+ 5
2
+ 2
2
+  
4
5
+  
10
2
+  
4
4
- 2
5
+  
10
10
- 5
4
- 2
1
+ 1
5
+ 5
10
-  
5
10
- 5
4
- 2
5
+ 5
3
+ 3
10
-  
5
2
+ 2
2
+  
4
4
- 2
5
+ 5
4
- 2
10
- 5
3
+ 3
10
- 5
4
- 2
4
+ 4
4
- 2

Review the above and then try the following steps:

  1. Print out and complete this worksheet to practice on paper with the above "missing number" questions.
  2. After finishing the "missing numbers" worksheet, you can work through this worksheet and practice more with Doubles Subtraction as well as with previously learned tricks.
  3. Having completed the above two worksheets, try this addition and subtraction review worksheet to practice all the tricks you have learned so far.
  4. Add these two math fact cards to your set and use them on a regular basis to help review and memorize these math facts.

Trick: Right Next To Each Other

exercise for identifying numbers that have a difference of one

Discuss Right Next To Each Other with your child and then tackle the four tasks below:

  1. Try this worksheet to complete the above exercise, marking the numbers that are Right Next To Each Other and crossing out the ones that are not.
  2. After finishing the above exercise, try the Right Next To Each Other worksheet that also includes some review of the Backwards 1 and Number +1 tricks.
  3. Next, print out this worksheet to practice Right Next To Each Other along with all the other tricks learned so far.
  4. Use these eight math fact cards on a regular basis to help review and memorize these Right Next To Each Other math facts.

Next Trick: Doubles Subtraction >>

Click to learn more about this Addition Facts Workbook
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

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