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