1
+11
6
+1
6
+3
1
+7
4
+5
10
+5
8
+1
2
+16
3
+15
3
+6
10
+8
4
+5
2
+15
4
+12
10
+7
10
+1
2
+1
10
+9
10
+5
2
+14
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.