18
-17
9
-3
12
-2
8
-2
12
-11
9
-6
19
-17
16
-4
2
-1
20
-10
14
-11
2
-1
8
-6
9
-1
11
-10
8
-7
4
-1
19
-9
5
-3
17
-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 Expert 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.