9
-3
15
-5
4
-2
5
-2
4
-2
12
-1
18
-15
5
-3
8
-4
18
-5
16
-10
5
-2
2
-1
5
-1
3
-1
5
-2
15
-13
2
-1
14
-4
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.