10
+6
1
+11
1
+18
5
+10
1
+14
3
+5
2
+17
10
+10
1
+14
2
+5
10
+1
1
+10
1
+6
2
+4
1
+8
5
+14
4
+4
3
+2
10
+3
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 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.