6
+10
4
+1
6
+12
1
+18
3
+2
4
+11
4
+5
2
+12
2
+3
10
+4
2
+11
10
+5
1
+4
1
+2
6
+10
5
+1
2
+17
4
+1
3
+14
3
+15
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 Expert 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.