10
+6
7
+10
2
+1
2
+4
9
+10
8
+10
10
+8
2
+2
3
+6
6
+12
7
+12
7
+12
6
+12
3
+16
8
+1
3
+14
6
+1
6
+3
5
+11
1
+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.