5
+12
3
+4
1
+16
1
+1
1
+18
2
+13
9
+10
7
+12
8
+1
7
+12
1
+14
4
+11
6
+12
4
+12
4
+1
6
+3
10
+7
4
+13
2
+2
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 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.