2
+1
10
+8
4
+15
4
+2
10
+4
10
+2
3
+2
2
+6
4
+11
10
+8
7
+11
10
+8
5
+13
3
+6
5
+12
10
+10
1
+6
10
+5
7
+10
3
+15
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.