5
+1
1
+6
6
+2
5
+1
5
+1
6
+3
2
+7
3
+2
7
+10
1
+7
1
+5
8
+10
1
+5
1
+4
3
+4
5
+10
2
+7
2
+1
10
+8
4
+10
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.