Question

Mr. Townsend needs to make 13 pairs of butterfly wings for costumes for play. Each pair of wings is made with 3/4 yard of fabric. The fabric cost $8 dollars per yard. Yo apply properties of multiplication in the following steps to find the total cost of the fabric. 3. Use the associative and commutative properties to rearrange the terms in the expression to make it easier to calculate. Explain why the rearranged expression is easier to work with write your answer in the space below

Answer 1

he will need 9.75 yards of fabric i got that from 3/4 x 13= 9.75.

it will cost 78 dollars to buy all the fabric to make the wings. 6x13=78

instead of using 3/4 per butterfly wing we round it to 4/4 that way instead of having to find the price of 3/4 you get the answer and just take 2 dollars for every wing

Explanation:

Answer 2

It would cost $6 per butterfly wing, which multiplied by 13, gives 78.

Explanation:

Treat 1 yard of fabric like the fraction 4/4, if this 1 fabric is equal to $8, then 3/4 of the fabric will be $6. That is for one pair of butterfly wings, there's 13 of those so multiply $6 by 13. It's easier this way because we know how much 1 fabric costs, but we don't know what 3/4 of it does, so we treat 1 yard of fabric as the fraction 4/4. This way we can simplify in a relatively easier way.