Here is the exact wording of the math problem she needs to solve : "Suppose a new student starts school today and your teacher asks you to teach her how to find decimal representations for fractions. What would you tell her? How would you convince this student that your method works?"
THANKS FOR YOUR HELP! I HATE MATH!
2006-12-18 23:05:43 · 7 answers · asked by Holden's Momma 2 in Education & Reference ➔ Homework Help
I guess I understand how to explain turning the fractions into decimals now but how do I explain how I turn decimals into fractions? THANKS!
2006-12-18 23:51:08 · update #1
Tell her that a fraction and a decimal are just different ways of expressing the same number.
1/4 is the same as 0.25.
to change a fraction into a decimal
Divide the denominator (the bottom part) into the numerator (the top part):
1/4 = 1 ÷ 4.00 = 0.25
Hope this site helps
2006-12-18 23:30:23 · answer #1 · answered by Corneilius 7 · 0⤊ 0⤋
you already have some good answers
I have taught adults math for years
don't hate math, hate is anti productive
admit it frustrates you, that's a better place to begin
a fraction is just another way of representing a number or an idea of a number. You understand the word 'three' and the symbol 3, right? Fractions is like that, only the idea is extended a little more
a fraction like 3/7, 3 in upstairs, 7 is downstairs, the downstais is also called the DENOMINATOR, the upstairs is called the numerator, Got all that?
to express a fraction as a decimal, it will take division, certainly not easy stuff without know multiplication. This is where I would tell me students, no shame in your game, if you do NOT have the fundamentals, we MUST go back
for the sake of getting this all in, let's retrun to our fraction 3/7
let's express it as a division question, 3÷7, three divided by seven, that is the numerator(upstairs) is divided by the downstairs) denominator
or we could write is like this:
__
7)3 which would allow us to do long division
_0.428571428571 . . .
7)3.00
-2.8
.20
- .14
60
- 56
40
-35
50
-49
10
- 7
30
-28 begins repeating, irrational number
EWWW! y!answers does not like showing long division!!
I had it lined up put I cannot post it . . . Hmmm
See, its NOT easy, but its NOT impossible
fractions like 3/8, or 7/12 are easier, 7 as a denominator is hard to work with
TO PROVE IT WORKS?!?!
multiply the answer by denominator
7 times0.428571428. . . is very close to 3
wrtie me direct if you wnat more help
2006-12-19 11:11:17 · answer #2 · answered by mike c 5 · 0⤊ 0⤋
I would tell her that fractions are just a way to represent a division--1/4 is 1 divided by 4, 3/10 is 3 divided by 10--because the line is the line from the division symbol. We can do the division and it will give us a decimal number. Then I'd perform the division to show.
Ways to prove that it works would be to use a calculator or to turn it back into a fraction. Let's say I showed her 1/4. 0.25 means 25/100. When I reduce that fraction, it is 1/4.
2006-12-18 23:22:48 · answer #3 · answered by glurpy 7 · 1⤊ 0⤋
I'll try to make this as simple as I can. Take the amount of $1.00, you know that 25 cents is 1/4 of the whole. Now, how do you notate 25 cents? As a decimal .25. The same is true for 50 cents (1/2) and 75 cents (3/4).
I hope this helps.
2006-12-18 23:17:22 · answer #4 · answered by c.s. 4 · 0⤊ 0⤋
I guess if you're trying to find" decimal representation for fractions" you're converting fractions to decimal -> so 1/2 = 0.5, 1/3=0.
33.
I hate maths too ! :(
2006-12-18 23:16:33 · answer #5 · answered by midnight_lady 2 · 0⤊ 0⤋
1/2 = .50
1/4= .25
3/4=.75
2006-12-18 23:19:51 · answer #6 · answered by ladyoutlaw71 2 · 0⤊ 0⤋
u have to study hard
2006-12-18 23:36:14 · answer #7 · answered by Please tell me 2 · 0⤊ 2⤋