Solve Vertical Subtraction: 577 minus 18 Step-by-Step

To solve this problem, we'll use vertical subtraction, often referred to as column subtraction. The given problem is:

$\begin{aligned} &577 \\ -& \\ &~~18 \\ \underline{\phantom{776}} & \\ \end{aligned}$

We'll perform the subtraction step by step:

• Step 1: Subtract the rightmost column (units):
  - From 7, subtract 8. Since 8 is larger than 7, borrow 1 from the tens column of 577.
  - Borrowing makes the 7 into 17 in the units column and the 7 in the tens column into 6.

• Step 2: Subtract in the tens column:
  - From the borrowed 6 in the tens column, subtract 1, giving us 5.

• Step 3: Subtract the hundreds column:
  - There is no borrowing needed here. Simply bring down the 5 as there is no corresponding number to subtract from the subtrahend, yielding 5.

Hence, the calculation becomes:

$\begin{aligned} &5 &\cancel{7}6 &&17 \\ - \\ &&1 &&8 \\ \overline{\phantom{2342}} \\ \end{aligned}$

Therefore, the solution to the subtraction problem is $559$.