1
+5
1
+15
7
+1
9
+10
2
+10
7
+2
4
+10
10
+3
5
+3
4
+5
10
+1
10
+1
6
+2
8
+11
2
+12
1
+1
3
+2
7
+10
4
+15
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.