1.MATH.3.D
Apply basic fact strategies to add and subtract within 20, including making 10 and decomposing a number leading to a 10.
Grade 1 · Texas Essential Knowledge and Skills (TEKS) · TEKS 2012
Standard Unwrapping
AI-generated as a starting point — sign in to edit.Vocabulary
basic fact strategiesadditionsubtractionnumbers within 20making 10decomposing a number10
Skills
- apply (basic fact strategies to add within 20) #dok2
- apply (basic fact strategies to subtract within 20) #dok2
- make (10 to assist in addition and subtraction within 20) #dok2
- decompose (a number leading to a 10 when adding or subtracting within 20) #dok2
Learning Targets
- I can recall basic addition and subtraction facts within 20. #dok1
- I can use making 10 to solve addition and subtraction problems within 20. #dok2
- I can use number decomposition to break apart numbers to make 10 in addition and subtraction within 20. #dok2
- I can apply different strategies to find sums and differences within 20 efficiently. #dok2
- I can explain my reasoning for using a particular strategy to add or subtract numbers within 20. #dok3
Big Ideas
- There are different strategies, like making 10 and decomposing numbers, that can help solve addition and subtraction problems efficiently.
- Understanding and applying basic fact strategies are essential for fluency in addition and subtraction within 20.
Essential Questions
- What strategies can I use to help me add or subtract numbers within 20?
- How does making 10 make adding or subtracting easier?
- Why is it helpful to decompose numbers when solving addition or subtraction problems?
- How do I know which strategy to choose for a given problem?
- When would one strategy be more useful than another for solving addition or subtraction within 20?