10
+4
10
+8
1
+1
10
+5
2
+4
1
+10
1
+11
10
+5
4
+13
6
+1
10
+3
10
+7
10
+6
6
+10
7
+11
10
+2
10
+10
10
+9
1
+2
4
+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.