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