Solve Vertical Subtraction: 700 minus 145 Step-by-Step

To solve this vertical subtraction problem, we'll follow these steps:

• Step 1: Align the numbers vertically, ensuring that each column corresponds to the correct place value.

• Step 2: Begin subtracting from the rightmost digit (units column) and move left, borrowing where necessary.

• Step 3: If a zero is present in a column and borrowing is needed, borrow from the next higher place value column.

Let's apply these steps using the numbers $700$ and $145$:

Step 1: Align the numbers:
$\phantom{0}700$
-$\phantom{0}145$
- - - - - -

Step 2: Begin with the units column (rightmost):
0 - 5.
We cannot subtract 5 from 0, so we need to borrow from the tens column.
But, the tens column is also 0, so we need to borrow from the hundreds column.

Step 3: Borrow 1 from the hundreds place (making it 6) and convert it to 10 tens in the tens column (makes the tens column 10).
Now borrow 1 ten (making the tens column 9) to turn the units column into 10.

Now solve:
$\begin{array}{c} &\phantom{0}6\phantom{0}&9&10 \\ - & 1 & 4 & 5 \\ \end{array}$
Units column: 10 - 5 = 5
Tens column: 9 - 4 = 5
Hundreds column: 6 - 1 = 5

Therefore:

$\begin{array}{c} \phantom{0}700 \\ -\phantom{0}145~~~ \\ ~~\overline{555} \\ \end{array}$

The correct answer to the problem is $555$.