10
+5
10
+4
2
+2
7
+1
1
+12
2
+16
4
+13
2
+16
10
+3
4
+1
6
+1
3
+16
10
+3
1
+12
8
+1
2
+7
5
+11
4
+11
6
+3
3
+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.