4
-3
15
-12
12
-2
2
-1
9
-1
4
-1
7
-4
11
-10
13
-3
17
-6
4
-1
2
-1
4
-3
18
-2
13
-11
4
-3
2
-1
19
-18
17
-11
13
-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 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.