5
+14
2
+17
10
+1
1
+4
4
+12
4
+13
1
+1
6
+10
10
+9
4
+10
10
+2
4
+2
1
+5
6
+11
3
+14
2
+16
3
+2
10
+6
4
+4
6
+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.