15
-1
6
-3
11
-1
17
-5
7
-1
4
-2
4
-2
18
-11
9
-2
12
-10
13
-2
19
-12
19
-9
15
-11
15
-14
15
-1
9
-6
19
-12
8
-6
17
-3
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.