1
+18
1
+12
1
+8
1
+2
6
+3
3
+13
1
+14
9
+10
1
+6
10
+9
2
+17
3
+10
2
+11
8
+1
9
+10
6
+12
6
+3
10
+2
4
+11
10
+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.