9
+10
5
+1
6
+3
5
+1
7
+1
10
+10
7
+1
10
+1
1
+12
1
+18
5
+13
5
+12
10
+6
6
+3
1
+10
2
+3
6
+12
6
+11
4
+12
4
+11
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.