4
+3
1
+12
6
+3
3
+13
6
+10
3
+6
3
+2
8
+10
2
+4
3
+14
3
+13
2
+7
4
+10
10
+10
3
+2
10
+5
6
+11
10
+10
4
+10
10
+9
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.