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
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
Last edited by WAQKY; 10-05-2015 at 12:26 PM. Reason: Icekane told me to change symbols
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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
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
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?)
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If you have a test why do you have access to internet..?
Also,4.8 is really easy,and dont you have calc?
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.
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i know how to do these but it hurts me.
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