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