4
+11
4
+3
6
+10
3
+10
7
+1
4
+15
1
+5
8
+1
2
+7
1
+10
1
+5
6
+2
1
+14
10
+1
3
+12
8
+11
3
+12
4
+4
4
+2
1
+3
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.