6
+13
10
+10
5
+4
5
+1
5
+11
6
+3
2
+11
3
+14
7
+12
1
+17
10
+4
6
+11
7
+1
2
+5
7
+10
5
+12
6
+13
4
+14
4
+5
10
+10
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.