Write Place Value Addition: Creating 781 Using Hundreds, Tens, and Units

To express the number as an addition exercise of hundreds, tens, and units, follow these steps:

• Identify the hundreds digit, which is $7$. This gives us $700$.
• Identify the tens digit, which is $8$. This gives us $80$.
• Identify the units digit, which is $1$. This gives us $1$.

Combine these place values into a sum: $700 + 80 + 1$.

Thus, the number can be written as $700 + 80 + 1 = 781$.

The correct multiple-choice answer, based on this decomposition, is choice 1: $700+80+1=781$.