3
+12
1
+5
2
+6
2
+7
4
+14
3
+4
7
+11
5
+14
5
+3
3
+16
10
+5
5
+10
6
+11
8
+1
6
+2
10
+5
1
+4
10
+10
1
+1
4
+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.