9
-4
3
-2
9
-2
4
-3
5
-4
5
-3
9
-6
18
-3
3
-1
6
-5
19
-15
13
-1
4
-1
16
-3
6
-3
13
-12
19
-15
18
-10
6
-4
15
-12
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.