how do i work out the lowest fractions on a calculator?

Question

if i have a fraction and i need to simplify it into its lowest form how do i do it on a calculator?

Answer 1

Look at your numerator and denominator. Guess at common factors, and see if you can divide the numerator and the denominator by the same factor... continue until you can't reduce any further.

e.g.
102 / 180

Looks like 2 is a factor of both numerator and denominator. So divide both by 2 on your calculator:
51 / 90

All the digits add to 3, so 3 is another factor:
17 / 30

Now 17 is prime and 30 is not a multiple of 17, so this is as far as you can go...

Answer 2

It depends on the type of calculator you have. Most calculators only work in decimals, so you have to find the least common multiple by trial and error.

There are other tricks to write a number in its prime factors (even numbers have a factor of 2, numbers whose digits sum to 3, 6, or 9 have a factor of 3, numbers ending with 0 or 5 have a factor of 5, etc.). A calculator can help you find the other factors...divide the number by, say, 7, and if there is no decimal, then 7 is also a factor.

However, if you have a TI-83, there is a way to write your answer as a fraction. For example, if you want to reduce 10/12, do the following:

type in 10 / 12 [Math] 1 [Enter]

The display will show 10/12>Frac when you hit the [Math] button followed by 1. When you hit [Enter], you should see 5/6 in the display.

Other calculators, like the TI-89, will automatically reduce the fraction. Type in 10/12 and hit [Enter], and the display is 5/6...no special commands needed.

Answer 3

Only scientific calculators will put a fraction in it lowest terms. Input the fraction then hit equals button this should put it in its lowest term. 95/100 = 19/20

Answer 4

The easiest way to do it is not on a calculator. It is to find the greatest common factor in both the numerator and denominator. Then reduce it by dividing that greatest common factor from both the numerator and denominator.

i.e. 16/20 has a greatest common factor of 4 so divide both by 4 and get 4/5.

Answer 5

Well most scientific calculators should have this button "a(b/c)" or something like that. OK for exmaple if you want to simply 50 and 35, put in 50 press a(b/c) and put in 35, then click "equal" it should simply it for you to 1 and 3/7. If you want it as a mixed fraction, click shift and then click a(b/c) again, to get your mixed fraction. Hope that helps.


Good luck!

Answer 6

If you're using a scientific calculator, use the "a b/c" button,
i.e.Press "6", "a b/c", "12" and "= " and you will get 1L2 which means 1/2.

Answer 7

a) b = 2/3 = .sixty six (suitable!) b) ok = one million/5 = 0.2 (suitable!) c) w = 5/7 ? 0.714 (suitable!) d) d = -(2/4) = -(one million/2) = -0.5 (verify) keep in mind, the training state which you will exhibit each fraction in lowest words. shall we take a closer look: -4d - 3 = -one million -4d = -one million + 3 -4d = 2 d = -(2/4) ===simplify====> d = -(one million/2) = -0.5 (<==answer!) e) t = 7/5 = one million.4 (suitable!) super activity!! i comprehend you're seeing the solutions as: "Now, divide one via 5" and you punch that into your calculator to get your decimal answer. think of approximately it. in case you're saying: "Divide one via 5", you may write a fragment: one million divided via 5 ==> one million / 5 ==> one million/5 wish I helped!

Answer 8

i dont think u cn do tht on a calculater but try a instruction manual