6
+12
1
+8
2
+6
3
+1
2
+5
10
+2
2
+12
10
+8
1
+18
10
+1
3
+5
1
+3
5
+11
1
+2
2
+12
1
+2
9
+10
8
+11
5
+12
6
+12
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.