4
-1
18
-1
7
-5
5
-1
19
-3
17
-11
9
-7
8
-7
9
-3
9
-5
3
-2
19
-7
6
-3
13
-1
6
-2
13
-1
13
-3
18
-3
17
-5
15
-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.