10
+1
2
+5
2
+14
1
+6
10
+7
1
+10
5
+4
1
+10
5
+1
7
+1
6
+10
8
+11
8
+10
1
+8
2
+7
1
+12
1
+17
1
+17
7
+11
5
+1
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.