10
+8
9
+10
6
+11
1
+7
5
+1
10
+7
3
+12
4
+15
6
+13
10
+5
8
+10
10
+10
2
+4
2
+15
3
+16
2
+3
3
+6
2
+5
6
+13
10
+8
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.