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Two Plus Two Is Not Five (Easy Methods to Learn Addition & Subtraction) Paperback – April 7, 2006
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About the Author
Susan R. Greenwald is an educator with many years of success teaching math facts and mathematics skills. She has written five math books.
Five Times Five Is Not Ten: Make Multiplication Easy, Two Plus Two Is Not Five: Easy Methods to Learn Addition and Subtraction, Addition and Subtraction: Beyond Math Facts and Ten Divided by Five Is Not Five: Using Multiplication to Make Division Easy are published by Longevity Publishing. Two Plus Two Is Not Five was the First Place winner in the Workbook category of the 2006 Evvy Book Awards.
Each of the workbooks support Common Core Standards. Teacher Created Resources published her first book, How to Teach Math Facts, in 1999.
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Top Customer Reviews
For those who want to hear the tricks that were hard for my child: Number In The Middle such as 8+6 is the same as Doubles 7+7. While this is useful and needed information, I think conceptually, this was a lot for my 7-yr old to switcheroo. Also a bit hard, Magic Nine, BUT she already had a handle that if she subtracts 10, then adds one back, she'll have it. So here, my girl had her own trick, and one shouldn't mess with what works. Nevertheless, DON'T let these minor criticisms deter you from buying--your child may love these tricks too OR you'll work through them like I did. The point is that IF you run into a difficulty like mine, you can manage it. A great, very well put-together book! I thank you wholeheartedly Susan R. Greenwald! (And shortly, on to the Multiplication book!)
There is no adding or subtracting of two double digit numbers (10+25 or 20-12 equations), but there are plenty of adding and subtracting of double digit numbers with single digit numbers. There are also a lot of tricks to adding and subtracting, many of which I never learned and found were really helpful! This is a wonderful book for any kid who needs a little more help on math at school, or for home schooling kids. Highly recommended.