What is 30( $ 1.49)?

1 Answer
Oct 16, 2016

$44.70

Explanation:

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

30.00
x1.49

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.
x149.

Break each number into parts and multiply those.

3000 | ..000 | ... 00 | .......0
x100 | x100 | x100 | x100

3000 | ....0
..x40 | x40

3000 | ..0
.....x9 | x9

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