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