8
-7
6
-3
2
-1
7
-4
19
-7
14
-12
5
-4
4
-1
19
-4
7
-3
5
-2
5
-1
16
-10
9
-7
16
-2
19
-4
18
-13
9
-2
7
-5
18
-15
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.