1. ## Math Help Please!

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      2. ## What don't you understand? 3. ##  Originally Posted by WAQKY 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     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. 4. ##  Originally Posted by IceKane 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? 5. ##  Originally Posted by WAQKY 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/.../S1U4L5GL.html 6. ##  Originally Posted by WAQKY 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 7. ## 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?) 8. ##  Originally Posted by ianCSzz 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  9. ##  Originally Posted by IceKane Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals Small circle, big circle, MEASURE OF THE ARC OF THE CIRCLE, SECANTS AND TANGENTS, SECTORS!! SPARTACUS! DESCARTES LE FIBONACCI|! 10. ##  Originally Posted by WAQKY 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     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 - - - Originally Posted by IceKane Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals I know right. 11. ##  Originally Posted by WAQKY 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     4.8/4=1.2

I LOVE MATHS 12. ##  Originally Posted by BioTestificate Small circle, big circle, MEASURE OF THE ARC OF THE CIRCLE, SECANTS AND TANGENTS, SECTORS!! SPARTACUS! DESCARTES LE FIBONACCI|! U wot m8 13. ## If you have a test why do you have access to internet..?

Also,4.8 is really easy,and dont you have calc? 14. ##  Originally Posted by IceKane Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals Been there, done that. Now I'm running the easy life in Consumer Math for 12th grade. 15. ## 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... 16. ##  Originally Posted by Boy255 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. 17. ##  Originally Posted by Boomer 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  18. ## i know how to do these but it hurts me. 19. ##  Originally Posted by IceKane Man, these guys are having the easy life, while we have to deal with imaginary numbers and radicals I haven't dealt with imaginary numbers (yet), but I am interested in them. Like, (-1)1/2 IS IMPOSSIBLE!!! 20. ##  Originally Posted by Aunos 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...

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