3
+6
10
+1
3
+1
2
+7
6
+10
10
+9
3
+3
1
+14
3
+11
7
+11
5
+1
5
+12
4
+14
1
+2
2
+2
1
+15
1
+16
6
+3
10
+6
2
+11
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.