anonymous
  • anonymous
2x 3/8
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
i got 480/80
theEric
  • theEric
Is this \[2 \times \frac{3}{8}\]?
anonymous
  • anonymous
yes

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anonymous
  • anonymous
helooooooooo
anonymous
  • anonymous
1
anonymous
  • anonymous
you have to multiply only the numerator by the three
anonymous
  • anonymous
oops i meant two
theEric
  • theEric
Just remember that fractions are really the amount on top (numerator) divided by the amount on bottom (denominator). One way to look at it is to turn the fraction \[\frac{3}{8}\] into\[3\div8\], so you have \[2\times3\div8\]Then solve the multiplications and divisions separately\[(2\times3)\div(8)=(6)\div(8)\]and then make it look like a fraction again:\[\frac{6}{8}\]. That can be simplified, though. Or, look at the "2" like this:\[\frac{2}{1}\], and multiply numerators together and denominators together. It's the same thing. Then\[\frac{2}{1}\times\frac{3}{8}=\frac{2*3}{1*8}=\frac{6}{8}\].
theEric
  • theEric
Those are two ways to think about multiplying fractions!
theEric
  • theEric
Sorry I took so long!
anonymous
  • anonymous
ok thanks
anonymous
  • anonymous
can u help me in one more
theEric
  • theEric
Can you simplify it? Divide top and bottom by 2! Some teachers require simplification...
theEric
  • theEric
Possibly! I have to go soon! You post it, and I'll see if I can help!
anonymous
  • anonymous
1 1/2 divided by 3
theEric
  • theEric
If it's very similar, I hope that you can do it on your own, or we can do it together!
theEric
  • theEric
So,\[1\frac{1}{2}\div3\]
anonymous
  • anonymous
i got 1 2/20
theEric
  • theEric
That is different!
theEric
  • theEric
That's not quite right, but we'll get there! \[1\frac{1}{2}=1+\frac{1}{2}\], right?
anonymous
  • anonymous
yeah
theEric
  • theEric
and 1, as a fraction, is any number over itself, like\[1=\frac{2}{2}\]right? Then you can look at \[1+\frac{1}{2}\]like\[\frac{2}{2}+\frac{1}{2}=\frac{3}{2}\]
theEric
  • theEric
\[1\frac{1}{2}=\frac{3}{2}\]
anonymous
  • anonymous
thanks men
theEric
  • theEric
\[=3\div2\]
theEric
  • theEric
That's just the fraction... You still have to divide by 3.
anonymous
  • anonymous
1.5
theEric
  • theEric
\[\frac{3}{2}=3\div2\] I did that again.. Similar to what we did before! Fraction to division... Really the same thing. Anyway, \[1\frac{1}{2}\div3=\frac{3}{2}\div3=3\div2\div3=3\div3\div2=1\div2\] See what I did there? And, if you need the fraction, I trust you can find it!
theEric
  • theEric
It's just lucky that \[3\div3=1\], because it made our problem easier! :)
anonymous
  • anonymous
Eric if you want I'll take over from here if you have to go..
theEric
  • theEric
Thanks! I trust you can help with this question and any others! :) I do have to get going. Take care, all!

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