4
+5
5
+12
10
+3
4
+11
8
+10
1
+16
1
+12
2
+3
7
+2
4
+5
1
+6
9
+10
1
+12
1
+1
10
+3
2
+16
1
+7
10
+8
3
+4
7
+12
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.