5
+3
1
+17
1
+2
5
+14
3
+12
4
+13
7
+10
4
+14
7
+12
1
+4
2
+2
4
+11
1
+18
2
+6
1
+2
3
+3
5
+10
3
+14
7
+12
6
+1
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.