16
-11
6
-3
2
-1
15
-10
2
-1
7
-4
12
-10
7
-1
8
-3
14
-3
3
-2
16
-4
9
-8
19
-14
16
-6
7
-3
5
-2
17
-13
17
-2
4
-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.