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.
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:
Discuss Right Next To Each Other with your child and then tackle the four tasks below:
Next Trick: Doubles Subtraction >>
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 soughtafter
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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