7
+12
10
+7
2
+10
10
+4
5
+13
3
+13
6
+11
3
+15
1
+18
2
+4
10
+1
4
+11
2
+5
7
+11
7
+12
10
+5
6
+11
1
+8
1
+7
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.