###
__Multiplying a Two/One Digits Number by 99__

### Conditions:

- The multiplicand must be a two or one digit number.
- The multiplier is 99

**Example 1**:

56 x 99 = ?

**Answer**:

- Reduce 56 by 1, and make the result the first 2 digits of the answer.

- Find the complement of 56, and make it the last 2 digits of the answer.

**Example 2**:

523 x 999 = ?

**Answer**:

- Reduce 523 by 1. The result will be the first 3 digits of the answer.

- Find the 1000's complement of 523. 1000 - 523 = 477. This will be the last 3 digits of the answer.

**Example 3**:

54 x 999 = ?

**Answer**:

54 - 1 = 53

1000 - 54 = 946

54 x 999 = 53,946

**Example 4**:

6435 x 9999 = ?

**Answer**:

6435 - 1 = 6434

10000 - 6434 = 3566

6435 x 9999 = 64,343,566

**Example 5**:

362 x 9999 = ?

**Answer**:

362 - 1 = 361

10000 - 362 = 9638

362 x 9999 = 3,619,638

**Example 6**:

83 x 9999 = ?

**Answer**:

83 - 1 = 82

10000 - 82 = 9917

83 x 9999 = 829,917

## 0 comments:

## Post a Comment