6
+2
3
+1
5
+10
6
+1
4
+10
3
+1
4
+15
7
+2
3
+12
3
+2
4
+3
6
+2
6
+12
7
+2
10
+7
10
+1
10
+5
2
+3
2
+1
5
+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.