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