19
-8
11
-1
6
-2
9
-7
2
-1
19
-8
18
-16
19
-7
8
-3
7
-1
5
-3
19
-1
2
-1
4
-2
5
-2
17
-14
2
-1
5
-2
6
-4
8
-6
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.