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