7
+2
1
+17
7
+2
5
+13
7
+12
10
+9
2
+15
3
+6
7
+12
10
+5
8
+11
1
+7
5
+3
1
+16
3
+12
3
+5
5
+3
10
+8
7
+10
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.