19
-8
9
-4
5
-1
4
-3
16
-5
7
-6
17
-2
15
-13
18
-10
18
-10
18
-1
7
-3
4
-2
20
-10
16
-12
16
-15
7
-6
18
-12
13
-2
17
-10
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.