5
+12
3
+11
10
+8
5
+13
2
+1
6
+12
5
+1
8
+10
6
+10
8
+11
2
+6
7
+12
10
+5
2
+14
3
+14
2
+4
7
+2
3
+15
4
+10
7
+11
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.