2
+13
10
+10
6
+2
10
+7
4
+15
2
+14
5
+2
10
+5
2
+1
3
+5
5
+11
2
+15
4
+14
10
+3
5
+11
8
+11
6
+3
4
+4
2
+16
2
+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 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.