17
-14
19
-14
2
-1
19
-13
6
-5
4
-1
6
-5
19
-8
18
-11
17
-4
19
-10
3
-1
5
-1
15
-2
15
-11
7
-3
7
-1
18
-17
2
-1
9
-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.