9
+10
5
+3
3
+4
10
+10
4
+14
1
+5
10
+2
6
+13
5
+14
10
+9
1
+15
1
+16
4
+1
6
+11
1
+16
1
+4
3
+5
1
+3
10
+8
10
+1
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.