15
-12
5
-1
5
-4
6
-4
8
-3
18
-16
18
-14
7
-4
8
-4
14
-2
16
-4
11
-10
7
-2
3
-2
13
-3
8
-2
18
-3
18
-8
9
-4
9
-7
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 Starter 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.