4
+2
3
+13
3
+13
3
+5
10
+9
1
+8
10
+3
1
+3
2
+10
4
+11
5
+2
5
+10
10
+3
10
+5
6
+13
9
+10
7
+10
4
+1
5
+2
1
+17
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.