Price: 200 points or $2 USD
Subjects: math,mathElementary,operationsAndAlgebraicThinking,additionAndSubtraction
Grades: 1,2
Description: This Halloween Themed deck of 10 no-prep, self-checking task cards will help your students master standard 1.OA.4: Understanding subtraction as an unknown-addend problem within 20. e.g., Subtract 10 – 8 by finding the number that makes 10 when added to 8.