Step-by-step explanation:
In expanded form, we can describe a number ABC as follows.
\(ABC = A \times 10^2 + B \times 10^1 + C \times 10^0\)
Therefore, 78 can be described in expanded form as follows.
78 = \(7 \times 10 + 8\)
= 78
Also, we can describe 78 in words as seventy eight.