Subtraction

Subtracting five Digit Numbers

Subtracting two five digit numbers (for example 94,529 - 76,733) is illustrated


834
94529
76733
17796

Subtraction equations - 5 digit

An equation is a mathematical statement such that the expression on the left side of the equals sign (=) has the same value as the expression on the right side. An example of an equation is 60000 - 40000 = 20000.

One of the terms in an equation may not be know and needs to be determined. Often this unknown term is represented by a letter such as x. (e.g. x - 40000 = 20000).

The solution of an equation is finding the value of the unknown x. To find the value of x we can use the additive equation property which says: The two sides of an equation remain equal if the same number is added to each side.

Example:
x - 50000 = 70000
x - 50000 + 50000 = 70000 + 50000
x - 0 = 120000
x = 120000
Check the answer by substituting the value of x (120000) back into the equation.
120000 - 50000 = 70000

Adding Four Digit Numbers

How to add four digit numbers (for example 4529 + 6733):

* Place one number above the other so that the thousands', hundreds', tens' and ones' places are lined up. Draw a line under the bottom number.


4529
6733

* Add the ones' place digits (9 + 3 = 12). This number is larger than 10 so place a one above the tens' place column and place the two below the line in the ones' place column.


1
4529
6733
2

* Add the tens' place digits (1 + 2 + 3 = 6) and place the answer below the line and in the tens' place column.


4529
6733
62

* Add the numbers in the hundreds' place column (5 + 7 = 12) and place the 2 below the line and before the other number below the line. Place the 1 from the twelve above the thousands' place column.


1
4529
6733
262

* Add the digits in the thousands' place column (1 + 4 + 6 = 11) and place the answer below the line in the thousands' place column.


4529
6733
11262


Subtraction equations - 6 digit

An equation is a mathematical statement such that the expression on the left side of the equals sign (=) has the same value as the expression on the right side. An example of an equation is 600000 - 400000 = 200000.

One of the terms in an equation may not be know and needs to be determined. Often this unknown term is represented by a letter such as x. (e.g. x - 400000 = 200000).

The solution of an equation is finding the value of the unknown x. To find the value of x we can use the additive equation property which says: The two sides of an equation remain equal if the same number is added to each side.

Example:
x - 500000 = 700000
x - 500000 + 500000 = 700000 + 500000
x - 0 = 1200000
x = 1200000
Check the answer by substituting the value of x (1200000) back into the equation.
1200000 - 500000 = 700000

Subtracting seven Digit Numbers

Subtracting two seven digit numbers (for example 8,694,529 - 3,476,733) is illustrated


834
8694529
3476733
5217796