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anonymous
 5 years ago
Sarah needs to make a cake and some cookies. The cake requires 3/8 cup of sugar and the cookies require 3/5 cup of sugar. Sarah has 15/16 cups of sugar. Does she have enough sugar, or how much more does she need?
anonymous
 5 years ago
Sarah needs to make a cake and some cookies. The cake requires 3/8 cup of sugar and the cookies require 3/5 cup of sugar. Sarah has 15/16 cups of sugar. Does she have enough sugar, or how much more does she need?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So in order to do this problem you will need to make the denominators like terms because this is an addition problem.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.03/8 + 3/5 = 15/16 ... would be the equation to this

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The common denominator cannot be 30 because 16 and 8 don't multiply evenly into it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Let's take this in chunks. Can you think of anything common that 5 and 8 can multiply into?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i was getting 6 x5 and 8x5 backwards

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Haha, no worries. Do you know how to take 3/8 and turn it into a fraction over 40?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah 8 goes into 40 5times so 5 times 3 =15 15/40

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Exactly. Now do the same for the 3/5?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Perfect. So now we can actually add. 15/40 + 24/40 = ?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0actually while we are at it ... how do you figure out the smallest common denominator? i always had a hard time with that. wasnt it something about prime numbers?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or would it be better to make it a new question?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Oh no, I can answer it. If it takes you a while to figure it out, it's more than likely the lowest common denominator is some random number we don't know off the tops of our heads. I wouldn't bother with it in that case, just use 8*5*16 as the common denominator and then work from there.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok so how much more sugar does she need and how do we determine that?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0subract 39/40 and 15/16

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0wasnt there a simple rule to figure it out? i remember me doing this in 6th grade i think.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0You have to figure out if 39/40 < 15/16, and if it is, she doesn't have enough.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So you must compare with like denominators. Once you have a common denominator for 40 and 16, you can compare with ease.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I'm really sorry, but I'm at school and the period is up. I have to go.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And yes, she does have enough ;)
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