16
-5
9
-7
6
-3
3
-1
2
-1
2
-1
9
-4
3
-2
12
-10
12
-11
18
-4
17
-7
15
-11
12
-2
3
-1
3
-2
9
-5
6
-5
5
-1
3
-1
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 Medium 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.