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These 224 practice cards help students organize their knowledge of number families to solve problems in which they need to find a missing part, rather than a sum or difference. They are very effective in helping students learn to build equations for word problems that require finding missing information.
All possible combinations for missing addends, minuends and substrahends for number families 6-18 are represented in the strategy cards.
Strategy cards are divided into two levels, facts to 5-10 and facts 11-18.
Print the cards double sided and laminate. Use with a dry erase pen. They can be used for a whole class activity or as a Math center.
16 free cards are included in the "Preview".
A review of the cards would be greatly appreciated.