14
-1
13
-1
19
-12
5
-3
19
-11
14
-11
15
-4
19
-12
9
-3
12
-11
11
-1
12
-10
15
-4
19
-12
14
-11
19
-10
16
-6
3
-1
3
-2
7
-4
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.