17
-1
3
-2
16
-10
11
-10
6
-3
2
-1
16
-12
18
-3
2
-1
14
-2
14
-10
12
-11
2
-1
18
-4
12
-2
3
-2
3
-2
9
-5
9
-5
4
-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 Hard 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.