3
+16
1
+11
10
+9
2
+7
1
+15
2
+4
1
+10
1
+6
10
+1
10
+6
10
+9
6
+1
5
+12
3
+14
3
+5
3
+6
10
+6
8
+1
5
+10
2
+2
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.