20
-18
8
×1
9
÷9
2
+13
10
-9
4
×3
6
÷2
11
+6
19
-2
10
×1
2
×1
18
÷6
9
+9
17
-4
8
×1
8
÷8
18
+1
7
-2
4
×3
10
÷10
Download this free mixed grade 1 within 20 math worksheet. Uniquely generated with an answer key — great for homework, practice, or assessment.
Features
- Printable PDF format
- Answer key included
- Multiple difficulty levels
- Classroom and home friendly
How to Use These Worksheets
- Select a grade 1 within 20 set.
- Print or use on-screen.
- Check answers and practice again.
Tips
- Start with easier sets and move up gradually.
- Practice in short sessions (10–15 minutes).
- Review mistakes and redo similar problems.
Frequently Asked Questions
How do I use this Mixed Grade 1 Within 20 Math Worksheet worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.