The sum of 38 and 78 is:

$38 + 78 = 116$

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Here are 5 related questions:

1. What is 116 + 56?
2. How do you add numbers with multiple digits?
3. What are the properties of addition?
4. Can you add fractions with different denominators?
5. What is the concept of carrying over in addition?

Tip: When adding multi-digit numbers, always start from the rightmost digit (ones place) and move to the left, carrying over any value if necessary.