2
+2
5
+2
4
+14
5
+1
2
+12
4
+14
6
+11
8
+1
3
+3
5
+12
1
+12
1
+3
6
+12
1
+18
3
+10
10
+4
10
+8
5
+1
10
+8
6
+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.