CelineFA

**Extended response questions:**  1. How can you tell if two fractions are equivalent?

If they have the same denominators and numerators or if they have a denominator that is a multiple of the other denominator, same as the numerator.

2. When is a fraction in simplest form? when it can't be simplified any more

3. Why do you need to find a common denominator before adding or subtracting fractions?  if the other fraction has a different denominator

4. 1/2-->1/4 : 1/4-->1/8 AND 1/3-->1/6 : 1/6--> 1/18 Why did you put that answer? What is the relationship between these pairs of fractions? Because 1/2 is bigger than 1/4 and it keeps continuing and they are similar because in each one the second number is twice as much as the first number.  5. Crozet Elementary teachers want students to only use #2 pencils or #2 mechanical pencils. To make that happen, the school will now provide all pencils, but we need to figure out what fraction of each kind the school should keep on hand. Several facts are known: 1. Mechanical pencils last twice as long as regular ones. 2. Mechanical pencils may only be used in grades 3, 4, and 5. 3. Mechanical pencils may not be used on bubble tests. 4. There are about the same number of students in grades K-2 as there are in grades 3-5. Using the information provided, what fraction of the total number of pencils should be mechanical pencils? Explain your decision in detail, using the facts. Well it would help me even more if I knew how many students there are in grades 3,4,and 5 but even though I think that they should use mechanical through the year for 3,4, and 5 except for on tests and fork-2 they should use all regular pencils. And I think that when you estimate how many kids are in a normal sized school through-out the school year that it would be about 3,500 mechanical pencils for 3-5 and 3,500 regular pencils for k-2.