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1st Grade Math
1. 1.OA.A.1
1.3 Subtracting with digits up to 20
Subtracting with digits up to 20
What You'll Learn
Subtract single-digit and two-digit numbers within 20
Apply subtraction facts to find differences accurately
Recognize patterns in subtraction with numbers up to 20
Build fluency with basic subtraction operations
What You'll Practice
1
Solving subtraction problems with numbers from 0 to 20
2
Computing differences with single-digit and teen numbers
3
Practicing mental subtraction strategies
Why This Matters
Subtracting with digits up to 20 is a fundamental skill you'll use every day, from counting change to solving more complex math problems. Mastering these facts builds the foundation for multi-digit subtraction, algebra, and real-world problem solving.
This Unit Includes
Practice exercises
Skills
Subtraction
Basic Operations
Number Sense
Mental Math
Arithmetic Facts
OH Curriculum Aligned