6
+3
4
+5
2
+5
10
+8
2
+2
1
+16
7
+2
5
+2
10
+2
3
+14
4
+12
1
+1
1
+18
10
+4
6
+11
1
+5
3
+13
6
+11
10
+5
2
+12
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.