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