4 boxes of pasta at $1.25 each

Question

 i need help solving this

Answer 1

Hi Daniela,

$1.25 
x    4
______

First, multiply the four and five and when you do that you come to a 20. You will leave the zero at the bottom and carry the two to the next column to the left. Your problem will now look like this. 

     2
$1.25
x     4
_______
       0 

Next you will multiply the four times the two and add the two left over from the first operation, okay? That leaves you with your problem looking like this: 

  1 2    
$1.25 
X    4
_______

    00

Now perform your last values by multiplying 4 and 1 while adding the 1. Your problem now looks like this: 

   12 
$1.25
x     4
_______
  5 0 0 

Now, look at the number of decimal places in the number $1.25 Do you see it? There are two spaces from the right meaning you do the same in your answer. 

$5.00 

I hope I helped you today. Have a good day.