15
-2
6
-1
18
-13
3
-2
18
-11
14
-1
4
-2
7
-3
15
-11
12
-1
13
-11
2
-1
17
-5
16
-5
4
-3
17
-1
6
-4
18
-7
6
-4
16
-12
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 Expert 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.