9
-3
13
-2
20
-10
17
-3
4
-3
19
-17
18
-4
17
-6
5
-4
3
-2
6
-4
15
-5
4
-3
6
-2
5
-3
6
-2
2
-1
2
-1
13
-12
7
-5
Practice subtraction within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Subtraction Within 20 Easy Worksheets 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.