10
+1
6
+13
1
+5
1
+13
4
+3
3
+2
3
+14
6
+11
1
+12
1
+3
6
+13
5
+10
10
+4
8
+11
1
+7
1
+15
9
+10
3
+13
5
+1
10
+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.