4
+5
10
+5
10
+10
5
+14
8
+10
5
+10
5
+11
2
+12
10
+3
3
+16
6
+13
3
+11
5
+1
10
+9
10
+6
10
+4
3
+5
2
+15
6
+12
6
+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.