6
+2
4
+15
10
+1
3
+1
1
+6
3
+6
5
+13
5
+13
8
+10
10
+7
3
+16
8
+11
6
+1
2
+11
4
+14
8
+10
1
+12
8
+1
8
+11
10
+4
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.