Flash Cards, Three-Corner, Addition/Subtraction
Review all facts through 12. Each pack contains 46 two-sided cards. The corner of each card has a number that can be joined with the number in another corner to form an equation. The third number is the answer. Can be played alone, in pairs, or in groups.
Rated 5 out of 5 by 1 reviewer.
Rated 5 out of 5 by PDXMom Helps student think in terms of fact families I got these for my 3rd grader who has a hard time with memorization. Regular flash cards only focus on one operation, but with these you can just cover up one number with your hand, and work on memorizing them as a group. Good idea ! October 29, 2014
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