1-Digit Subtraction Practice
Practice basic single-digit subtraction facts to build subtraction fluency, number sense, and confidence for early elementary learners.
What You'll Practice
- ✓ All single-digit subtraction facts (1−1 through 9−1, up to 9−9)
- ✓ Differences from 0 to 8, including the hardest subtraction facts
- ✓ Instant feedback on every answer with streak tracking
- ✓ Streak and best score saved automatically in your browser
Mental Math Strategies
Count Back
Start from the larger number and count down. For 9 − 3: start at 9, count back 3 → 8, 7, 6.
Think Addition
For 8 − 5: ask "5 + ? = 8." If you know your addition facts, you can find subtraction answers instantly.
Use Fact Families
Know that 6 + 4 = 10, so 10 − 4 = 6 and 10 − 6 = 4. Addition and subtraction facts come in families of four.
Frequently Asked Questions
What grade is 1-digit subtraction?
1-digit subtraction is a core Kindergarten and Grade 1 skill. Students work toward fluency with all single-digit subtraction facts before moving on to two-digit subtraction.
What does "difference" mean in subtraction?
The difference is the result of a subtraction problem. For 9 − 4 = 5, the difference is 5. It represents how much larger one number is than another, or how much is left after taking away.
How do I get faster at single-digit subtraction?
The most effective strategies are: count back from the larger number (for 9 − 3, start at 9 and count back 3), use the "think addition" strategy (for 8 − 5, ask "5 + ? = 8"), and learn fact families (knowing 6 + 4 = 10 means you also know 10 − 4 = 6). Daily short practice sessions build speed faster than occasional long sessions.
How many subtraction facts are there?
There are 72 single-digit subtraction facts (from 2 − 1 through 9 − 9, excluding subtraction by 0). If you include differences equal to zero, there are 81. Most curricula focus on the core facts with differences from 0 to 8.