Question

What is `30( $ 1.49)`?

Answer 1

$44.70

Explanation:

`30($1.49)` or `30*1.49`
This type of multiplication is most commonly done in the following format.

`30.00`
x`1.49`

To avoid confusion, the decimal points can be moved two spaces to the right in each number as long as they are returned at the end.

`3000.`
x`149.`

Break each number into parts and multiply those.

`3000` | ..`000` | ... `00` | .......`0`
x`100` | x`100` | x`100` | x`100`

`3000` | ....`0`
..x`40` | x`40`

`3000` | ..`0`
.....x`9` | x`9`

Now multiply each.

`9*0=0` and `9*3000=27,000`
`40*0=0` and `40*3000=120,000`
`100*0=0` and `100*3000=300,000`

The products should then be added to make one sum.

`27,000+120,000=147,000`
`147,000+300,000=447,000`

The total number of decimal places that we removed was four.
So we move the decimal to the left four places to finish.
`447,000. -> 44.7000`

Finally, this number represents an amount of money, so it must be written that way.
`$44.70`