2
+13
5
+14
3
+13
2
+15
10
+7
8
+10
10
+1
1
+1
5
+3
9
+10
1
+18
1
+16
10
+5
5
+14
2
+4
4
+3
7
+10
4
+5
3
+1
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.