10
+3
3
+6
6
+12
4
+3
1
+16
2
+1
3
+2
2
+3
8
+10
10
+1
6
+10
10
+9
1
+17
2
+2
4
+11
1
+3
2
+3
4
+4
5
+12
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.