8
-6
12
-11
9
-5
5
-4
18
-1
3
-2
19
-8
18
-4
7
-2
3
-2
3
-1
8
-5
5
-3
2
-1
6
-4
15
-4
17
-2
18
-15
3
-1
14
-1
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.