15
-2
16
-13
7
-6
2
-1
6
-2
2
-1
9
-7
9
-1
9
-2
18
-12
4
-3
9
-5
2
-1
13
-10
8
-2
7
-6
6
-2
5
-2
2
-1
6
-4
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.