5
+3
4
+13
7
+10
1
+2
1
+17
3
+11
1
+4
2
+3
2
+7
3
+10
2
+14
8
+10
6
+10
1
+3
10
+10
5
+3
4
+15
6
+10
9
+10
1
+16
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.