2
-1
19
-3
3
-2
6
-2
7
-4
16
-3
19
-3
18
-3
6
-3
15
-14
5
-4
3
-2
18
-15
6
-4
6
-4
14
-12
9
-1
19
-8
14
-4
3
-2
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 Hard 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.