6
+3
2
+14
5
+1
2
+13
2
+7
2
+5
10
+3
1
+2
1
+15
3
+3
4
+15
10
+3
2
+6
4
+13
6
+2
10
+2
1
+1
10
+8
4
+12
5
+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.