View Full Version : Math Help Please!

WAQKY

10-05-2015, 12:19 PM

Help I have a test in multiplying and dividing decimals through fractions. HALP

Ex.

2.3 * 3.2 = 6.60

23/10 * 32/10 = 66/100

Most of the questions are like this too.

4.8 / 4 = ?!?!

( / = divide )

HALPHALPHALPHALPHALPHALPHALP :panic::panic::panic::panic::panic:

AntoDecay

10-05-2015, 12:20 PM

What don't you understand?

IceKane

10-05-2015, 12:21 PM

Help I have a test in multiplying and dividing decimals through fractions. HALP

Ex.

2.3 x 3.2 = 6.60

23/10 x 32/10 = 66/100

Most of the questions are like this too.

4.8 * 4 = ?!?!

( * = divide )

HALPHALPHALPHALPHALPHALPHALP :panic::panic::panic::panic::panic:

Note: * is multiply, try to use / next time.

Anyway, 4.8/4 = 1.2. What you try to do is to disregard the decimal point, divide, then put it back where it should be. Be careful, though.

WAQKY

10-05-2015, 12:26 PM

Note: * is multiply, try to use / next time.

Anyway, 4.8/4 = 1.2. What you try to do is to disregard the decimal point, divide, then put it back where it should be. Be careful, though.

Oh yeah! Thanks!

I also don't understand when to get the reciprocal when dividing? I think?

AntoDecay

10-05-2015, 12:35 PM

I also don't understand when to get the reciprocal when dividing? I think?

When you divide fractions, all you need to do is multiply the fraction by the reciprocal.

(example of reciprocal. 3/4's reciprocal is 4/3)

Use this if I didn't do well explaining:

http://www.math.com/school/subject1/lessons/S1U4L5GL.html

IceKane

10-05-2015, 12:39 PM

Oh yeah! Thanks!

I also don't understand when to get the reciprocal when dividing? I think?

That's a totally different topic. Fractions, right? % = Divide, m'kay?

When you divide two fractions, eg. (1/2 % 2/3), you need to get the reciprocal of the divisor, or the second number, then change the sign to multiplication. So the equation becomes something like this:

(1/2 x 3/2) = 3/4

ianCSzz

10-05-2015, 12:43 PM

If you have trouble with decimal division, just multiply each of the numbers by 10, 100, 1000, etc. The point is you don't want any decimals.

Ex : 6.9/3 = (6.9x10)/(3x10) = 69/30 = 23/10 = 2.3 (you know how to do this right?)

IceKane

10-05-2015, 12:45 PM

If you have trouble with decimal division, just multiply each of the numbers by 10, 100, 1000, etc. The point is you don't want any decimals.

Ex : 6.9/3 = (6.9x10)/(3x10) = 69/30 = 23/10 = 2.3 (you know how to do this right?)

Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals :rolleyes:

BioTestificate

10-05-2015, 12:52 PM

Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals :rolleyes:

Small circle, big circle, MEASURE OF THE ARC OF THE CIRCLE, SECANTS AND TANGENTS, SECTORS!! SPARTACUS! DESCARTES LE FIBONACCI|!

ElectroDream

10-05-2015, 12:55 PM

Help I have a test in multiplying and dividing decimals through fractions. HALP

Ex.

2.3 * 3.2 = 6.60

23/10 * 32/10 = 66/100

Most of the questions are like this too.

4.8 / 4 = ?!?!

( / = divide )

HALPHALPHALPHALPHALPHALPHALP :panic::panic::panic::panic::panic:

4.8 / 4

48/10 : 4

48/10 x 1/4 (turn it upside down okay)

48 / 40

---------------- : 4 (read: divided by four)

12 / 10

1.2

- - - Updated - - -

Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals :rolleyes:

I know right.

Ivy389

10-05-2015, 12:58 PM

Help I have a test in multiplying and dividing decimals through fractions. HALP

Ex.

2.3 * 3.2 = 6.60

23/10 * 32/10 = 66/100

Most of the questions are like this too.

4.8 / 4 = ?!?!

( / = divide )

HALPHALPHALPHALPHALPHALPHALP :panic::panic::panic::panic::panic:

4.8/4=1.2

Which grade are you in?

I LOVE MATHS

Mark Chong

10-05-2015, 12:58 PM

Small circle, big circle, MEASURE OF THE ARC OF THE CIRCLE, SECANTS AND TANGENTS, SECTORS!! SPARTACUS! DESCARTES LE FIBONACCI|!

96099

U wot m8

Boy255

10-05-2015, 12:58 PM

If you have a test why do you have access to internet..?

Also,4.8 is really easy,and dont you have calc?

Boomer

10-05-2015, 01:00 PM

Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals :rolleyes:

Been there, done that. Now I'm running the easy life in Consumer Math for 12th grade.

Aunos

10-05-2015, 01:02 PM

Lucky it's just multiply and divide of fractions... We have to deal with x's and y's and occasional Z,A,B and C.

my secret to get good grades in math...

listen to the teacher in class. Tutor or parents won't be able to do much help. By listening to how it is done, after 1 or 2 examples, I allready know how to do it.

Alexanderkg

10-05-2015, 01:03 PM

If you have a test why dude you have access to internet..?

Also,4.8 is really easy,and dont you have calc?

He want to know how to get the answers not only answer dude.

IceKane

10-05-2015, 01:08 PM

Been there, done that. Now I'm running the easy life in Consumer Math for 12th grade.

Ehh, luckily imaginary numbers are a piece of cake, so I'm spending my time studying trigonometry :rolleyes:

im in 7th grade lol.

i know how to do these but it hurts me.

ianCSzz

10-05-2015, 01:20 PM

Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals :rolleyes:

I haven't dealt with imaginary numbers (yet), but I am interested in them. Like, (-1)1/2 IS IMPOSSIBLE!!!

unconscious98

10-05-2015, 01:25 PM

Lucky it's just multiply and divide of fractions... We have to deal with x's and y's and occasional Z,A,B and C.

my secret to get good grades in math...

listen to the teacher in class. Tutor or parents won't be able to do much help. By listening to how it is done, after 1 or 2 examples, I allready know how to do it.

Damn I'm jealous of your teacher. My teacher is ****. And immature. :l

He is good at math but sucks at teaching. And also my science teacher.

Here's one of the most basic lessons we had..

http://www.mesacc.edu/~scotz47781/mat120/notes/rational/complex/images/examples/e1_s2.gif

It's so easy but he makes it seem harder.

I cri evreritiem

Aunos

10-06-2015, 12:45 AM

Damn I'm jealous of your teacher. My teacher is ****. And immature. :l

He is good at math but sucks at teaching. And also my science teacher.

Here's one of the most basic lessons we had..

http://www.mesacc.edu/~scotz47781/mat120/notes/rational/complex/images/examples/e1_s2.gif

It's so easy but he makes it seem harder.

I cri evreritiem

We had that last quarter

|ThyLuigi|

10-06-2015, 02:39 AM

Help I have a test in multiplying and dividing decimals through fractions. HALP

Ex.

2.3 * 3.2 = 6.60

23/10 * 32/10 = 66/100

Most of the questions are like this too.

4.8 / 4 = ?!?!

( / = divide )

HALPHALPHALPHALPHALPHALPHALP :panic::panic::panic::panic::panic:

Convert the fractions to decimals, then multiply as you normally would.

WAQKY

10-07-2015, 11:17 AM

Update:

I got 31/40 :crazy:

Thanks guys! :yeah:

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