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