What do you know about adding and subtracting fractions?
A.G, CC and CH all talked about having the same denominator. A.G started talking about adding 1/2
and 2/10. This is a good example, go back and read what A.G. said about 1/2 and 2/10. If we need the same denominator how do you get the same denominator?
What do you know about multiplying fractions? How would you solve 1/5 x 1/2
One person said that we do not need the same denominator when multiplying. If we do not need the same denominator what happens to the pieces?
E.L.V It is a good strategy to multiply the denominators and numerators. Do you know why it works?
Nicolas, Are you talking about addition or multiplication when you said that they will not be equal? You are right whatever you multiply the denominator you must multiply the numerator when you are adding and subtracting.
Iliana, Does it matter which fraction you put in the array first when you multiply?
Irene, Which fraction would you put in the array first when you are multiplying? Does it matter?
Nicolas, I was able to follow your steps. So, you draw a rectangle and cut it in half because your first fraction is ½ and the denominator tells you to cut it in half. Then your second fraction is 1/5 and the denominator tells you to cut each ½ into 5 parts and shade in only one part, so you end up with 10 parts and one is shaded in. Does that sound right?
Irene and Iliana, Both of you said that you would change a fraction sometimes when adding. How would you know when they need to change?