3
+12
4
+3
4
+2
4
+2
3
+2
3
+10
2
+16
5
+13
2
+12
9
+10
1
+12
3
+10
6
+13
1
+3
10
+10
10
+7
1
+14
2
+6
6
+13
1
+11
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.