4
+4
1
+18
4
+10
3
+2
2
+4
2
+4
3
+11
10
+10
5
+13
2
+1
7
+11
1
+14
3
+14
6
+10
5
+1
3
+12
3
+4
8
+1
1
+15
7
+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.