4
+4
10
+9
10
+3
2
+10
5
+2
6
+10
10
+6
3
+2
10
+8
10
+7
1
+1
3
+5
3
+4
10
+7
6
+2
3
+6
8
+1
4
+1
5
+10
10
+5
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.