Subtract Numbers: - 71,845 - 6,363 + 6,902 + 67,986 - 7,170,889 - 150. Calculate the Difference and Learn How To Do the Subtraction, Column Method. Online Calculator

The ones digits line up in the first column from the right.

The tens digits line up in the next column to the left.

And so on...

8 is the ones digit.
Write it down at the base of the ones column.

8 is the tens digit.
Write it down at the base of the tens column.

The sum is a two-digit number: 18.

8 is the hundreds digit.
Write it down at the base of the hundreds column.

1 is the thousands digit.
Carry it over to the thousands column.
Write the digit above that column.
Add it with the rest of the digits in that column.

The sum is a two-digit number: 14.

4 is the thousands digit.
Write it down at the base of the thousands column.

1 is the ten thousands digit.
Carry it over to the ten thousands column.
Write the digit above that column.
Add it with the rest of the digits in that column.

7 is the ten thousands digit.
Write it down at the base of the ten thousands column.

The ones digits line up in the first column from the right.

The tens digits line up in the next column to the left.

And so on...

The sum is a two-digit number: 17.

7 is the ones digit.
Write it down at the base of the ones column.

1 is the tens digit.
Carry it over to the tens column.
Write the digit above that column.
Add it with the rest of the digits in that column.

The sum is a two-digit number: 24.

4 is the tens digit.
Write it down at the base of the tens column.

2 is the hundreds digit.
Carry it over to the hundreds column.
Write the digit above that column.
Add it with the rest of the digits in that column.

The sum is a two-digit number: 22.

2 is the hundreds digit.
Write it down at the base of the hundreds column.

2 is the thousands digit.
Carry it over to the thousands column.
Write the digit above that column.
Add it with the rest of the digits in that column.

9 is the thousands digit.
Write it down at the base of the thousands column.

The sum is a two-digit number: 14.

4 is the ten thousands digit.
Write it down at the base of the ten thousands column.

1 is the hundred thousands digit.
Carry it over to the hundred thousands column.
Write the digit above that column.
Add it with the rest of the digits in that column.

2 is the hundred thousands digit.
Write it down at the base of the hundred thousands column.

7 is the millions digit.
Write it down at the base of the millions column.

The answer will be negative (less than zero).

To subtract the numbers just reverse them:

7,249,247 - 74,888 = ?

But at the end attach a minus sign in front of the result.

The ones digits line up in the first column from the right.

The tens digits line up in the next column to the left.

And so on...

The borrowing is a two step process:

Subtract 1 from the top digit in the column of the tens: 4 - 1 = 3.
Cross out the top digit you've borrowed 1 from: 4.
Write the answer above that digit: 3.

When borrowing, 1 ten = 10 ones.
Add 10 to the top digit in the column of the ones: 10 + 7 = ¹7.

After borrowing, the subtraction has become:
17 - 8 = 10 + 7 - 8 = 10 + 7 - 8 = 7 + (10 - 8) = 7 + 2 = 9.
9 is the ones digit.
Write it down at the base of the ones column.

Subtract 1 from the top digit in the column of the hundreds: 2 - 1 = 1.
Cross out the top digit you've borrowed 1 from: 2.
Write the answer above that digit: 1.

When borrowing, 1 hundred = 10 tens.
Add 10 to the top digit in the column of the tens: 10 + 3 = ¹3.

After borrowing, the subtraction has become:
13 - 8 = 10 + 3 - 8 = 10 + 3 - 8 = 3 + (10 - 8) = 3 + 2 = 5.
5 is the tens digit.
Write it down at the base of the tens column.

Subtract 1 from the top digit in the column of the thousands: 9 - 1 = 8.
Cross out the top digit you've borrowed 1 from: 9.
Write the answer above that digit: 8.

When borrowing, 1 thousand = 10 hundreds.
Add 10 to the top digit in the column of the hundreds: 10 + 1 = ¹1.

After borrowing, the subtraction has become:
11 - 8 = 10 + 1 - 8 = 10 + 1 - 8 = 1 + (10 - 8) = 1 + 2 = 3.
3 is the hundreds digit.
Write it down at the base of the hundreds column.

9 8 - 4 = 4.
4 is the thousands digit.
Write it down at the base of the thousands column.

Subtract 1 from the top digit in the column of the hundred thousands: 2 - 1 = 1.
Cross out the top digit you've borrowed 1 from: 2.
Write the answer above that digit: 1.

When borrowing, 1 hundred thousand = 10 ten thousands.
Add 10 to the top digit in the column of the ten thousands: 10 + 4 = ¹4.

After borrowing, the subtraction has become:
14 - 7 = 10 + 4 - 7 = 10 + 4 - 7 = 4 + (10 - 7) = 4 + 3 = 7.
7 is the ten thousands digit.
Write it down at the base of the ten thousands column.

There is a single digit in this column: 2 1.
1 is the hundred thousands digit.
Write it down at the base of the hundred thousands column.

There is a single digit in this column: 7.
7 is the millions digit.
Write it down at the base of the millions column.