1
+16
6
+13
4
+3
10
+7
1
+4
5
+10
4
+12
10
+4
6
+13
8
+1
4
+1
4
+12
1
+12
5
+2
10
+2
10
+7
10
+6
10
+7
3
+13
1
+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 Starter 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.