3
+16
5
+14
10
+9
3
+1
10
+2
3
+16
9
+10
3
+13
2
+4
8
+1
6
+2
4
+15
1
+1
3
+14
4
+4
10
+6
6
+10
6
+13
2
+17
10
+1
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.