5
+13
2
+6
6
+2
1
+11
6
+12
4
+3
9
+10
2
+2
3
+3
3
+15
2
+2
2
+12
6
+13
3
+16
4
+10
10
+10
3
+12
3
+16
10
+7
3
+2
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.