Posted by Marissa on Thursday, December 9, 2010 at 7:01pm.
What steps do we use to change 11/2 cups in half?

6th grade  Writeacher, Thursday, December 9, 2010 at 7:05pm
3/2 divided by 2 = 3/2 * 1/2 = ??

6th grade  Ms. Sue, Thursday, December 9, 2010 at 7:06pm
Change 1 1/2 to an improper fraction.
Multiply.
(1/2) * (3/2) = 3/4

6th grade  Marissa, Thursday, December 9, 2010 at 7:13pm
I was told that when dividing a mixed number you write the reciprocal of the second number and then multiply and that will change the answer.

6th grade  Ms. Sue, Thursday, December 9, 2010 at 7:15pm
You only use the reciprocal when the original problem is a division problem.
Your problem is a straight multiplication problem.

6th grade  Marissa, Thursday, December 9, 2010 at 7:55pm
Isn't this a division problem? I have to divide 11/2 into two parts.

6th grade  Ms. Sue, Thursday, December 9, 2010 at 8:07pm
It's the same thing.
(3/2) / 2 = (3/2) * (1/2)
The simpler way is to remember that "of" in a math problem means to multiply.
(3/2) * (1/2) = 3/4

6th grade  Marissa, Thursday, December 9, 2010 at 8:19pm
Thank you very much for your help. I had the same answer. I'm trying to explain the reciprocal to my daughter, she is worried that her teacher will say the answer is wrong.

6th grade  Ms. Sue, Thursday, December 9, 2010 at 8:40pm
You're very welcome.
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