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