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