4
+5
7
+2
10
+4
7
+10
10
+9
6
+3
10
+1
5
+11
6
+10
1
+12
10
+6
3
+5
2
+13
1
+15
5
+3
6
+1
8
+11
3
+10
10
+4
1
+15
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.