6
+13
1
+4
7
+12
4
+13
2
+7
3
+15
5
+1
2
+12
2
+12
4
+15
5
+13
2
+16
6
+3
4
+15
6
+10
1
+15
3
+11
6
+12
6
+3
1
+14
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.