7
-4
15
-11
17
-13
17
-5
7
-2
18
-8
14
-4
14
-2
13
-2
14
-10
9
-5
17
-6
7
-3
5
-4
11
-1
9
-4
8
-6
7
-6
8
-2
3
-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 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.