Order the numbers from greatest to least: 0.625, 3/8, 3/5

Question

asked Nov 19, 2016 136k views

1 Answer

Joaonrb · Answer 1 · 2016-11-24T23:28:55+0000

We know the smallest number has to be
(3)/(8)

. Why? Well, one way to see it is that
(1)/(8) = .125

in decimal form, so
(3)/(8) = .375

. But another way to see it, even it you don't remember the decimal form of
(1)/(8)

, is to notice that
(3)/(8)

is less than
(4)/(8) = (1)/(2)

, and both of the other numbers are bigger than
(1)/(2) = .5

!

Now, to order the other two numbers, you should remember that
(1)/(5) = .2

, so

, which is less than

.

So, the order of the numbers from greatest to least is

$\bf .625, (3)/(5), (3)/(8)$