16
-15
5
-3
16
-11
6
-4
16
-15
7
-4
3
-1
6
-5
5
-2
5
-1
6
-5
8
-7
15
-5
15
-3
6
-2
15
-5
4
-2
7
-2
16
-5
16
-10
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.