6
-5
8
-4
17
-14
6
-5
12
-2
15
-13
9
-7
17
-10
8
-7
4
-3
16
-3
17
-13
18
-12
18
-10
18
-1
2
-1
16
-6
5
-1
9
-5
7
-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.