3
-1
2
-1
18
-8
9
-2
6
-5
3
-2
19
-10
8
-6
8
-2
15
-11
17
-6
4
-3
2
-1
17
-1
8
-5
16
-13
4
-2
18
-5
9
-6
9
-8
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.