How do you divide a fraction

2 answers:

8 0

Hey, 25equivelv!

If you know how to multiply a fraction, you will be able to divide it as well. If you do not know how to multiply a fraction, look it up or message me.

I say that if you know how to multiply fractions you know how to divide them because dividing is basically multiplication backwards, so in fraction terms, it's multiplying by the reciprocal. If you don't know what that is, multiplying by the reciprocal is that same as flipping the second fraction and multiplying.

Watch this youtube video for more: https://www.youtube.com/watch?v=q4vEI4mk8g0

Hope I helped!

~Olivia

kolbaska11 [484]3 years ago

8 0

You divide a fraction by using the KCF method. KCF stands for Keep Change Flip. First, write your problem down. You keep the first fraction the same, change the division sign to a multiplication sign, and flip the fraction around. An example would be 1/3 / 5/8. You would keep the 1/3 how it was, change the / to x or •, and flip the 5/8 to get 8/5. Then, you multiply them together. (Use cross cancelation if necessary) You would do:

1 8
- x -
3 5

1 x 8 is 8 and 3 x 5 is 15 so you'd get 8/15.

Hope this helps!!

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Sylvia read that the height of the Empire State Building is 443.2 m and wants to build a scale model of the building in her room

muminat

Answer:

Scale of 181: 1

Step-by-step explanation:

The first thing to do is to pass the feet by the meter, to work in the same units and thus create a consistent scale:

We know that one foot equals 0.3048 meters, therefore:

8 feet * 0.3048 meters / 1 foot = 2.4384 meters

So the scale would be:

443.2 / 2.4384 = 181.75

Which means that it is best to make a scale of 181: 1