1
+18
10
+2
6
+3
10
+10
10
+1
10
+9
2
+16
2
+13
6
+1
2
+5
3
+12
2
+6
10
+4
10
+7
1
+5
10
+10
3
+11
7
+2
5
+10
5
+14
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.