4
+2
8
+1
5
+14
2
+14
10
+1
1
+7
3
+3
6
+11
7
+10
5
+13
2
+15
5
+1
10
+8
6
+1
5
+1
10
+10
2
+1
1
+11
1
+1
5
+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.