3
+10
1
+3
1
+18
7
+2
2
+2
3
+10
3
+3
4
+11
5
+11
3
+6
6
+11
7
+1
10
+7
3
+1
6
+12
7
+10
10
+5
4
+10
5
+13
2
+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.