2
-1
7
-5
4
-1
6
-4
18
-17
16
-3
7
-6
16
-4
14
-4
5
-3
12
-10
17
-4
18
-6
18
-5
4
-1
7
-5
11
-10
7
-6
5
-2
9
-4
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 Easy 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.