Subtraction to 20 Operations and Algebraic Thinking (Answer Key) 52 Task Cards

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Operations & Algebraic Thinking Subtract within 20
Answer key included
2 sets of 26 Task Cards
Missing Number
Differentiate and Extend your lesson
Subtract within 20, demonstrate fluency for subtraction
within 20. Use strategies such as counting on; making ten
(e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number
leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using
the relationship between addition and subtraction
(e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4).
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33
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Subtraction to 20 Operations and Algebraic Thinking (Answe
Subtraction to 20 Operations and Algebraic Thinking (Answe
Subtraction to 20 Operations and Algebraic Thinking (Answe
Subtraction to 20 Operations and Algebraic Thinking (Answe