HELP HELP HELP im having a exam tomorrow and need help please
ok
well im really bad at fractions like adding them taking devieding so on
???
oh gosh fractions o.O i admit this is a pretty hard topic to explain...hmm
i know! give me two fractions
um 9/68 times 8/68
multiplication of fractions is just multiplying straight across
9*8 ------ 68*68 in this case
no ive been told not if you have the same denoimanter sorry cant spell
do you want help? or just to argue?
im sorry were you right?
yes, i was right. multiplication of fractions is just multiplying them straight across
\[\frac{a}{m}*\frac{b}{n}=\frac{ab}{mn}\]
okay so like 8/95 time 5/85 so 8times 5 then 95 times 85
yes
they like you to simplify as much as possible, but the value remains the same
okay thank you now what about if there is a bit number in front like 6 9/8 time 8/9
a mixed numeral has a big number in front; it tells you how many whole pieces you have; the fraction is the stuff thats remaining think of it as pies or cakes or pizzas; you have 6 whole pizzas and 9 out of 8 pieces left over. to figure out how many pieces of 8 you have; multiply 6 by 8 and add it to the fraction
in other words, convert the mixed numeral to an improper fraction and then multiply across like usual
very well explanations as usual @amistre64 ^_^
its a curse lol
ahh yes we all have that curse lol
so example?
convert 3 2/5 into an improper fraction for me, just try it out so i can see what your thinking is
okay one minute
is it three times 2 or three times five?
the bottom number is how many peices we want it broken into; so 3 whole "pizzas" cut into 5 pieces each gives us how many pieces?
15
good, and we had 2 pieces out of 5 left over to add to it. (15 + 2) pieces of 5s = 17/5 right?
yep
3 2/5 = 17/5 now its easier to use with other fractions if we want to add or multiply it to them
for example; 17/5 * 15/3 would be?
um :/
nothings changed as far as the rule goes; multiply top to top, and bottom to bottom
okay and you just add the left over big nuber not in this case though rite?
we changed the big number so that it became a part of the fraction. there is another way we could have approached it, but this is a common method to use.
so for example 2/6 * 6 1/6
sorry wasnt supposed to send that
lol, was it illegal?
huh?
you said, you werent spose to send that i responded with, was it illegal? i thought that was pretty straight forward ....
yeah it was
post up some new questions for people to help you out with and get their opinions on. I have to get back to work :) good luck
okay thanks
Join our real-time social learning platform and learn together with your friends!