How do u divide a fraction by a number?

= (1/3)/(4/1)
= (1/3)(1/4)
= 1/12

Answer: 1/12

Checking:
= 1/12(4/1)
= 4/12 or 1/3

you take that whole number and divide one by it so you would take the number 1 and divide it by that nubmer 4 = 1/4

and then multiply it by that fraction:

1/3 * 1/4 = 1/12

the simpler explanation would be to take the number and multiply the denominator with it. so number is 4 and the denominator is 3 so you have 3*4 = 12 and that 12 is the denominator of that fraction. The numerator stays the same. In this case, it's a 1. But if it was 2/3 divided by 4 then it would be 2/12, which is also equal to 1/6

Invert the divisor (bottom) and multiply.
Key: a whole number can be written over 1. Therefore, 4 becomes 4/1
Now you have: 1/3 over 4/1
Then: 1/3 x 1/4 = 1/12 (invert the divisor and multiply)
Reasoning: (1/3 over 4/1) x (1/4 over 1/4)
The denominator became 1/4 x 4/1 = 1
and the numerator became 1/3 x 1/4 = 1/12
Now print this off and show it to your teacher who does not know the above reasoning.

Rule

(a / b)
--------
c

a
------
bc

Example
(1/3) / 4 = 1 / 12

Simply multiply the denominator of the fraction by the number.

1/12

Have an awesome day!

Whenever doing division involving fractions, invert the divisor before multiplying

You multiply the denominator (the lower part of the fraction) by the number.
eg 2/3 divided by 3 = 2/(3 times3) = 2/9

When you divide a number (whether it is a fraction or not) by another number; in effect you are multiplying it by the inverse of the number.

so, in the above example, dividing 1/3 by three is the same as multiplying 1/3 .
Therefore, 1/3 divided by 3 = 1/3 times 1/3 = 1/9.

It is important to remember this when dividing one fraction by another: simply multiply the fraction by the inverse of the divisor fraction.
eg: 2/3 divided by 2/7 = 2/3 times 7/2 = 14/6

To divide a fraction by a number, the rule is:

Turn the the number upside down and multiply.

Hence:

1/3 divided by 4

= 1/3 multiplied by 1/4

= (1/3) * (1/4)

= 1/12

It is worth noting that the rule works when dividing a fraction by another fraction. For example:

1/3 divided by 3/4

= 1/3 multiplied by 4/3

= (1/3) * (4/3)

= 4/9

ahh..
ok..
here is it..
if u write it it will be..
1/3/4
since 4 is he denominator...the rule is u must reverse the 4 or make it in its reciprocal...
so 4/1 will become 1/4..
then the mathematical sentence will be..
1/3 * 1/4..the divide sign will become multiplication sign...
its the rule once you reciprocal the denominator and then you start multiplying.
1/3 * 1/4 = 1(1)/3(4) = 1/12
so the answer is 1/12!!!

1/3 ÷ 4
= 1/3 ÷ 4/1
= 1/3 x 1/4
= (1 x 1)/(3 x 4)
= 1/12