6
-1
18
-12
8
-6
18
-4
15
-14
8
-2
16
-4
18
-6
5
-4
9
-6
7
-1
19
-5
20
-10
17
-2
7
-5
4
-2
19
-8
8
-4
8
-1
4
-1
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.