Operations
Subtraction
 Subtraction is an operation used to calculate the difference between two numbers.
 The symbol used to denote subtraction is ‘−‘.
 Subtraction is the process of taking away one number or amount from another.
 The number from which another number is subtracted is called the minuend and the number which is subtracted is called the subtrahend.
 The result is called the difference.
 The subtrahend is always smaller than the minuend.
Subtraction Using Addition
Examples:
 352  153
 756  545
Answers:

We can subtract 153 from 352 as:
So, 100 + 100  1 = 200  1 = 199
Hence, 352  153 = 199

We can subtract 545 from 756 as:
So, 100 + 100 + 10 + 1 = 211
Hence, 756  545 = 211
Subtraction of 3digit numbers without borrowing
 Start subtracting digits from the ones place.
 Subtract the digits at the tens place
 Subtract the digits at the hundreds place
Let us discuss the subtraction of the threedigit number without borrowing by examples.
Examples:
 353  151
 756  545
Answers:

353151 =
Hence, 353  151 = 202

756  545 =
Hence, 756  545 = 211
Subtraction of 3digit numbers with borrowing
 Start subtracting digits from the ones place. If the minuend is lesser than the subtrahend then subtraction is not possible. We need to borrow ten from the minuend at tens place and add with the minuend at ones’ place and then do the subtraction.
 Subtract digits at tens place. If the minuend is lesser than the subtrahend then subtraction is not possible. need to borrow ten from the minuend at hundreds place and add with the minuend at ones’ place and then do the subtraction.
 Repeat the process
Let us discuss the subtraction of the threedigit number with borrowing by example.
Examples:
 353  154
 756  548
Answers:

353  154
Hence, 353  154 = 199

756  548
Hence, 756  548 = 208
Checking subtraction by Addition
The result of any subtraction can easily be checked using addition. To check whether the result of the subtraction (difference) is correct or not, one should add the subtrahend with the difference. If the sum results in the minuend, then the subtraction is correct.
Here, some examples are given below.
Examples:
Find the difference and check by addition:
 605  263
 689  354
Answers:

605  263
So, the difference is 342.
Now, to check the result is correct, add the difference with subtrahend and check if the sum is the minuend.
Hence, it is clear that the answer of the subtraction is correct.

689  354
So, the difference is 335.
Now, to check the result is correct, add the difference with subtrahend and check if the sum is the minuend.
Hence, it is clear that the answer of the subtraction is correct.