10
+6
2
+10
7
+2
4
+15
5
+1
5
+13
3
+5
5
+13
1
+18
3
+11
8
+11
10
+1
1
+3
6
+3
5
+2
6
+11
4
+3
10
+8
4
+15
1
+11
Practice addition within 20 with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Addition Within 20 Easy 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.