10
+5
2
+7
7
+12
10
+3
1
+12
5
+3
10
+7
5
+14
4
+1
10
+3
1
+10
3
+6
6
+1
1
+6
8
+10
5
+1
6
+10
2
+17
6
+10
5
+4
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.