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

Video Solution

Solution Steps

00:00 Solve

00:03 Each time consider a subtraction of 2 digits, and then we'll place

00:06 7 is less than 8

00:09 Therefore we subtract 1 from the tens, and add this amount to the ones

00:14 So now instead of 7 we'll have 17

00:19 We subtract the ones from the ones plus ten

00:22 Place in the ones

00:26 Subtract tens from tens, and place in tens

00:29 Place 0 in the missing digits

00:32 Subtract hundreds from hundreds, and place in hundreds

00:35 And this is the solution to the question

Step-by-Step Solution

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 $559$ .