Question

Mark simplified three over five ÷ five over eight.; his work is shown below. Identify where he made his error.

Original division problem: three over five ÷ five over eight.

Step 1: three over five multiplied by eight over five.

Step 2: three times eight over five times five.

Step 3: twenty-four over five.

Step 4: four and four over five.

a
Step 1

b
Step 2

c
Step 3

d
Step 4

Answer 1

Step 2 is where your error is located

Answer 2

Step 3 Is where mark made his/her error.


so if the problem was 3/5 divided by 5/8, you will need to reciprocal. that means you have to switch 5/8 into 8/5.


3/5 x 8/5


3 x 8 = 24/?


5 x 5 =25.


the fraction would be 24/25.


So mark made his mistake on step 3 because the denominator isn’t a one digit number such as 5. And so it should be changed to 25.