Wednesday, June 19, 2013

0.04 divided by 5 My 11 year old son needs to know the method for dividing decimals as above. Thank you

We'll change the decimal 0.04 to a fraction,
4/100.


We'll move the decimal point in 0.04, 2 places to
the right and we'll transform the decimal number into a whole number, also, we'll move
the decimal point in denominator, the same number of
places:


0.04/1.0 = 0.4/10.0 =
4.0/100.0


Now, we'll divide both, numerator and
denominator, by 4:


4/100 =
1/25


Now, we'll divide the ratio1/25 by
5:


(1/25)/5 = 1/25*5 =
1/125


Now, we'll divide
1:125


1 : 125 =
0.008


10


100


1000


The
result of division:


0.04 : 5 =
0.008


We also can calculate in
this way:


0.04 :
5


We'll move the decimal point in the dividend (0.04) 2
places to the right:


4 :
500


We'll write to the right the result of division of 4
and 500:


4:500 = 0


We'll place
the decimal point after 0 result and we'll divide 40 by
500:


40 : 500 = 0.0


400: 500 =
0.00


4000:500 =
0.008

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