2
-1
12
-11
6
-3
18
-8
4
-3
14
-13
19
-16
4
-1
15
-4
12
-10
18
-13
6
-3
4
-2
3
-2
5
-1
14
-10
14
-2
18
-3
6
-5
3
-2
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.