1
+17
1
+2
9
+10
10
+6
1
+7
1
+4
6
+13
10
+6
10
+8
5
+3
8
+1
10
+4
7
+2
4
+11
6
+13
10
+3
1
+17
6
+3
8
+1
7
+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 Easy 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.