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__Note__:We had discussed this method in our previous articles for 2-digit numbers and today we shall explain the same method for 3-digit numbers.

**A. Numbers whose last digits add to 10 and the remaining first digits are the same**

**Case 1**:

**When sum of last two digits number is 100**

Example:

**392 x 308**

Here we can see that right digits sum is 100 i.e.(92 + 8) and left side digits are same. Here we can now apply the same method, which we discussed earlier for 2-digit number. But this time we must expect to have four figures on the right-hand side.

- First, multiply the right side numbers(92 x 08) and the result is 0736.
- Second, multiply 3 by the number that follows it, i.e.4, so the result of (3 x 4) is 12.
- And now the final output is
**120736**.

Example:

**795 x 705**

Here 95 + 05 = 100 and left side digits are same i.e. '7'. Hence it qualifies for this case.

In calculation, we shall multiple the last two digits and the left digit i.e. '7; with its next number '8'. So the calculation is:

795 x 705 = 7 x 8 | 95 x 05

= 56 | 0475

=

**560475**

Example:

**866 X 834**

Here 66 + 34 = 100 and left side digit is 8 and its next number is 9. So the calculation is:

848 x 852 = 8 x 9 | 66 x 34 (Note: For 66 x 34, we shall discuss in our upcoming articles)

= 72 | 2244

=

**722244**

**Case 2: When sum of whose last digits is 10 and the remaining first digits are the same**

Example:

**241 x 249**

Here we can see that right digits sum is 10 i.e.(9 + 1) and left side digits are same i.e. 24. So we can now apply the same method as described above.

241 x 249 = 24 x 25 | 1 x 9

= 0600 | 09

=

**60009**