how to divide decmails

label Mathematics
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please help

Nov 7th, 2014

Example: Divide 9.1 by 7

Ignore the decimal point and use Long Division:

  13
7 )91
 9
 7
 21
 21
 0


Put the decimal point in the answer directly above the decimal point in the dividend:

  1.3
7 )9.1

The answer is 1.3

Example: Divide 6.4 by 0.4

We are not dividing by a whole number, so we need to move the decimal point so we are dividing by a whole number:

move 1
6.4 64
0.4 4
move 1

6.4/0.4 is exactly the same as 64/4,
as we moved the decimal point of both numbers.

Now we can calculate:

64 / 4 = 16

So the answer is:

6.4 / 0.4 = 16

you can refer from: http://www.mathsisfun.com/dividing-decimals.html


Nov 7th, 2014

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