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Overview
Grade 1
Number
8. Demonstrate an understanding of addition of numbers with answers to 20 and their corresponding subtraction facts, concretely, pictorially and symbolically
8.8 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
PEI Curriculum Aligned