Question

Carla bought 66 inches of pink ribbon and 36 inches of white ribbon. She wanted to cut each ribbon into 6 equal pieces.

Which explanation correctly shows how to calculate the difference in length between one piece of pink ribbon and one piece of white ribbon?

A.
Step 1 Divide: 66 ÷ 6.
Step 2 Divide: 36 ÷ 6.
Step 3 Subtract the two quotients.

B.
Step 1 Divide: 66 ÷ 6.
Step 2 Divide: 36 ÷ 6.
Step 3 Add the two quotients.

C.
Step 1 Multiply: 66 × 6.
Step 2 Multiply: 36 × 6.
Step 3 Add the two products.

D.
Step 1 Multiply: 66 × 6.
Step 2 Multiply: 36 × 6.
Step 3 Subtract the two products

Answer 1

Answer: A.

Step 1. Divide 66 ÷ 6

Step 2. Divide 36 ÷ 6

Step 3. Subtract the two quotients.

Explanation:

Since Carla wants to cut each ribbon into six equal pieces, each pink ribbon piece is going to make up 1/6 of the original 66 inches of pink ribbon. 66 × 1/6 is equivalent to 66 ÷ 6. For the white ribbon, each piece is going to make up 1/6 of the original 36 inches of white ribbon. 36 × 1/6 is equivalent to 36 ÷ 1/6. The word “difference“ means to subtract, therefore we need to subtract the two quotients. (The answer would be 5 since 11 - 6 = 5)

Answer 2

A

Explanation:

A is correct because each ribbon needs to be split into 6 pieces, meaning you have to divide by 6. Do that for both. Then you subtract the quotients because it is asking for the difference.