how do you find out what 1/2 - 3/8 is?
2007-07-04 11:56:59 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
1/2=4/8 by times 4 both sides
4/8-3/8=1/8
2007-07-04 12:04:38 · answer #1 · answered by CoolioMADDog 4 · 0⤊ 0⤋
We have a subtraction case here.
In order to work with fractions, denominators must be the same.
Your fractions have different denominators.
In order to create same denominators, we must find the LCD or lowest common denominator.
1/2 - 3/8 =
What is the BIGGEST number that 2 and 8 can evenly be divided into?
How about 8?
8 divided by 2 = 4
8 divided by 8 = 1
We now multiply 4 and 1 by their respective numerators.
8 divided by 2 = 4 and 4 times 1 = 4.
And
8 divided by 8 = 1 and 1 times 3 = 3
We now have this new fraction with the same denominator:
(4 - 3)/8 =
4 minus 3 = 1, right?
Final answer: 1/8
2007-07-04 19:06:52 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You make 1/2 into 4/8 and then you just subtract...
4/8-3/8
2007-07-04 19:02:09 · answer #3 · answered by Hawaii 3 · 0⤊ 0⤋
1/2-3/8
Change 1/2 to 4/8 by multiplying both top and bottom by 4.
4/8-3/8 = 1/8 since the denominators both now = 8, we can just subtract the numerators and put the result over the common denominator.
2007-07-04 19:03:29 · answer #4 · answered by ironduke8159 7 · 1⤊ 0⤋
I've just worked out what is 7/8 + 1/2 for you. Figure it out from the answer you got for that question.
2007-07-04 19:08:16 · answer #5 · answered by Anonymous · 0⤊ 0⤋
use a calculator or cheat
2007-07-04 19:04:30 · answer #6 · answered by Anonymous · 0⤊ 0⤋