Subtract the numbers: - 2,702 + 10,087 = ? Calculate the numbers difference and learn how to do the subtraction, column subtracting method, from right to left

The operation to perform:
- 2,702 + 10,087

Rewrite the initial operation:

- 2,702 + 10,087 =


10,087 - 2,702

Subtract the numbers:
10,087 - 2,702 = ?

Method used below: column subtracting, from right to left (traditional)


Stack the numbers on top of each other.

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...


 10087
-  2702

?

Subtract column by column; start from the column on the right

Subtract the digits in the ones column:

7 - 2 = 5.
5 is the ones digit.
Write it down at the base of the ones column.


 10087
-  2702

     5

Subtract the digits in the tens column:

8 - 0 = 8.
8 is the tens digit.
Write it down at the base of the tens column.


 10087
-  2702

    85

Subtract the digits in the hundreds column:

0 - 7 = ?

The second digit is larger than the first.
Borrow from the next column to the left.

In this case we borrow across zero(s), a multiple step process:


Subtract 1 from the top digit in the column directly to the left.
But that digit is zero. You need to go further left.


Subtract 1 from the nearest column to the left with a non-zero top digit.
That is the column of the ten thousands: 1 - 1 = 0.
Cross out the top digit you've borrowed 1 from: 1.
Write the answer above that digit: 0.


Cross out the zero(s) that you were going across to the left: 0.
Write a 9 above each one of the crossed out zeros.
Why? In fact we have subtracted 1 from 10: 10 - 1 = 09.


When borrowing, 1 thousand = 10 hundreds.
Add 10 to the top digit in the column of the hundreds: 10 + 0 = 10.


 0910  
 10087
-  2702

    85

After borrowing, the subtraction has become:
10 - 7 = 3.
3 is the hundreds digit.
Write it down at the base of the hundreds column.


 0910  
 10087
-  2702

   385

Subtract the digits in the thousands column:

0 9 - 2 = 7.
7 is the thousands digit.
Write it down at the base of the thousands column.


 0910  
 10087
-  2702

  7385

Subtract the digits in the ten thousands column:

There is a single digit in this column: 1 0.
0 is the ten thousands digit.
Write it down at the base of the ten thousands column.


 0910  
 10087
-  2702

 07385

Leading zeros

When leading zeros occupy the most significant digits of a natural number, they could be left blank and the numeric value stays the same:

07385 = 7385

Final answer:
- 2,702 + 10,087 = 7,385

How to subtract the numbers:
2,704 - 10,089 = ?


Subtraction Calculator: Subtract Numbers & Learn to Calculate the Difference

1. Stack the numbers on top of each other. 2. Subtract column by column starting from the column on the right.

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