1
+4
3
+10
3
+12
4
+2
10
+7
2
+16
1
+8
7
+12
4
+5
1
+12
1
+18
7
+11
7
+12
4
+3
7
+10
2
+7
10
+4
8
+10
6
+3
3
+5
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.