1
+10
3
+4
1
+14
10
+3
2
+15
10
+8
4
+14
10
+9
3
+3
10
+10
1
+2
8
+1
7
+1
4
+14
4
+11
7
+10
3
+12
2
+3
7
+10
5
+12
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.