17
-4
2
-1
7
-6
9
-3
18
-11
9
-5
16
-5
12
-11
8
-1
2
-1
4
-3
9
-5
7
-1
16
-15
17
-12
4
-1
2
-1
2
-1
3
-2
16
-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 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.