One digit adding
What is 1 + 4?
5
What is 20 + 35?
55
What is 100 + 300?
400
What is 3 + 9?
12
What is 57 + 69?
126
What is 593 + 347?
940
What is 5 + 7?
12
What is 32+95?
127
What is 789 + 243?
1,032
What is 9 + 8?
17
What is 43 + 78?
121
999 + 978
1,977
What is 9 + 9?
18
What is 99 + 99?
198
What is 999 + 999?
1,998