2
-1
5
-2
9
-8
15
-12
3
-1
17
-4
8
-1
17
-7
9
-8
6
-3
3
-2
20
-10
15
-2
15
-4
9
-5
8
-4
18
-1
9
-1
14
-3
5
-3
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 Starter 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.