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Choose one or more addends.
Can you make all 12 monster friends appear? And stay?
More Math Games to Play
Math Monster Addition - Learning Connections
Essential Skills
Mental Math - practice adding numbers

Common Core Connection for Grades 1 and 2
Apply properties of operations as strategies to add and subtract.
Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.
Add within 100, including adding a two-digit number and a one-digit number.
Fluently add and subtract within 20 using mental strategies.
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