How do I multiply a decimal by a whole number?

Question

I forgot how to multiply a decimal by a whole number how do I do it helppppppppppppp!!!!!

like do this 1

10x5.8=

Answer 1

It is a good idea to make a quick estimate as this helps decide where the decimal point will go.
In your example :-
Estimate is 60
10 x 5.8 = 58 (as 58 is close to 60)

Example
5.8 x 2
Estimate is 12
5.8 x 2 = 11 . 6

Answer 2

so that you can "SEE" it, actually turn the whole number into a decimal by adding the point and zero(s) to match the decimal you have already... so

10.0
x 5.8
______
800
500 sorry, I don't know how to make the number sit where it should.... the programming here keeps moving it to the wrong place... but you know where it should go!!...
_____

5800

now count the number of places BEHIND both points and you get TWO
count from the right side backward, those TWO places and put a point... which is 58.00 or 58

sure, there's shortcuts, but if you do it this way, you'll be SURE of the answer.....

Answer 3

Simply set it up like you would a whole number, like this:

3.45
x 3

and multiply as you normally would. But, when you're done, count the number of decimal places in the problem (in this case, 2) and move the decimal over that many places in your answer.

Answer 4

You just multiply it like normal and then you count how many places are behind the decimal and put it in ur answer:

5.3 5.8
X10 X10
____ ____
53.0 58.0

Hope I helped! Email me if more questions: [e-mail]

Answer 5

welll, say 1,5 times 2 is 3 yes?
0,1 times 10 is 1 while 0,1 times 0,1 is 0,01:))

Answer 6

158
x 2.8
----------
442.4