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