4
-3
3
-2
16
-5
18
-8
12
-1
19
-13
2
-1
9
-5
2
-1
5
-2
19
-7
19
-3
14
-4
4
-3
17
-16
6
-5
2
-1
17
-10
13
-12
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.