19
-16
16
-1
18
-4
19
-12
2
-1
17
-15
5
-2
15
-5
2
-1
4
-1
18
-12
17
-11
17
-7
6
-3
13
-12
3
-1
8
-7
2
-1
15
-13
5
-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.