The operation to finding the difference between two numbers is called subtraction. Let us know some facts about subtraction which will help us to learn subtraction of large numbers.

**1.** Subtraction with small numbers can be worked out
horizontally.

Example: 8 – 5 = 3

24 – 4 = 20

**2.** Subtraction with large numbers is worked out vertically.
Numbers are written under the place value chart.

Example: Th H T O

8 6 7 2

__ - 5 4 3 2__

__ 3 2 4 0__

**3.** Zero subtracted from a number does not change the value of the number.

Example: H T O

2 5 8

__ + 0__

__ 2 5 8__

**4.** 1 subtracted from a number gives the predecessor of the number as the difference.

Example:

**5.** The number from which the other number is to be
subtracted is called the minuend. The number subtracted is called the
subtrahend and the answer is called the difference.

Example:

**6.** If the subtrahend is missing, then the difference is
subtracted from the minuend.

Minuend – difference = subtrahend.

Example:

Workings:

**7.** To find the missing minuend, the difference is added to
the subtrahend.

Difference + subtrahend = minuend

Example:

Workings:

**Note:** Here in workings we did difference + subtrahend = minuend

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