Explain in words how to change a fraction to a percent

2 answers:

4 0

Let's take 1/5 as an example. Okay so percents are usually x/100. So what times 5 equals 100? 20! So we multiply both the top and bottom by 20. 1 x 20= 20 and 5 x 20= 100. So it would be 20/100 as a fraction. Now since a percent is out of 100, then you just take the 20 as a percent. The answer to this would be 20%. Now for numbers that don't easily go Into 100. Let us look at 2/3. You would have to divide 2 by 3 which is .6666. Now put decimal two places to the right. Percent is 66%

Fynjy0 [20]3 years ago

3 0

Hi , you have to divide the numerator and the denominator , if you get a decimal you just have to move the period 2 spaces to the right.
For example
3/8 -0.375
0.375 - 37.5

You might be interested in

What is the Largest prime factor of 2²+3²+5² ?

uranmaximum [27]

It looks like 19 would be.

I don't know any slick way to find it, other than just slugging it out.

4 0

3 years ago

Read 2 more answers

Mario claims that if the dinominator of a fraction is a prime number, then its decimal form is a repeting decimal. Do you agree?

vodomira [7]

Answer:

I do not agree because Mario's claim is not general.

Step-by-step explanation:

Prime numbers: These are a set of numbers that are divisible by 1 and itself only. Examples are: 2, 3, 5, 7. 11 etc.

And a denominator is the divisor in a given fraction.

Considering the following fractions whose denominators are prime numbers:

$\frac{2}{3}$ = 0.66666666...

$\frac{1}{7}$ = 0.142857142

$\frac{5}{11}$ = 0.45454545...

$\frac{3}{13}$ = 0.23076923

$\frac{1}{7}$ = 0.142857142

It could be observed that Mario's claim is not a general principle which is applicable to all fractions with a prime denominator. Thus, I do not agree with his claim.

4 0

3 years ago

John is about to roll a six sided, fair number cube 60

sukhopar [10]

Answer:

No it is not a good prediction. Theoretical probability says that the answer would be 30 of the 60 (30/60) rolls would be even numbers.

Step-by-step explanation:

The probability of rolling an even number on a fair six sided die is 3/6 or 1/2 when simplified.

if john rolls the die 60 times, multiply the theoretical probability (1/2) by the number of rolls

(1 ÷ 2) x 60 = 30

∴ theoretical probability says that john would roll an even number 30 out of the 60 rolls

I hope this was helpful :-)