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