4
+14
1
+12
10
+2
10
+6
6
+11
1
+12
2
+14
10
+2
10
+10
8
+11
1
+18
1
+7
2
+17
2
+1
1
+17
10
+3
3
+12
2
+2
3
+13
7
+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.