4
+12
4
+4
6
+3
2
+13
10
+6
1
+7
1
+2
5
+3
1
+11
1
+17
4
+11
10
+2
1
+12
2
+4
3
+3
1
+12
2
+13
4
+10
10
+6
1
+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.