3
+3
3
+6
2
+7
1
+1
5
+1
7
+2
8
+1
10
+10
1
+5
7
+1
4
+1
5
+4
10
+1
4
+4
3
+10
1
+8
1
+1
10
+2
6
+1
6
+2
Practice addition facts with free printable worksheets. Uniquely generated — reinforce key math skills with every set.
Frequently Asked Questions
How do I use this Addition Facts Hard 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.