Solve Vertical Subtraction: 308 minus 89 Step-by-Step

To solve this subtraction problem, we must perform vertical subtraction of 89 from 308 using the borrowing technique:

• Step 1: Write the numbers in vertical format, ensuring that each digit is in the correct place value column:

$\begin{array}{c} & 3 & 0 & 8 \\ - & & 8 & 9 \\ \hline \end{array}$

• Step 2: Start with the rightmost column (units). We need to subtract 9 from 8, but since 8 is smaller than 9, borrow 1 from the tens column.
• With borrowing, the tens digit (0) decreases to 9 after borrowing 1 from the hundreds column.
• This gives us: 2 in the hundreds, 9 in the tens, and 18 in the units column.
• Step 3: Proceed with subtraction:
• Units: Subtract 9 from 18 to get 9.
• Tens: Subtract 8 from 9 to get 1.
• Hundreds: As there is no digit to subtract from 2 in the hundreds place, it remains 2.
• Step 4: Write down the resulting digits in their respective place values.

$\begin{array}{c} & 2 & 9 & 18 \\ - & & 8 & 9 \\ \hline & 2 & 1 & 9 \\ \end{array}$

Therefore, the difference between 308 and 89 is $219$.

The correct choice from the provided answer choices is choice 1: 219.