Melanie needs 3.5 meters of ribbon to decorate a package. She has 1.5 meters of ribbon right now. The ribbon is only sold in centimeter lengths. How many centimeter lengths of ribbon does Melanie need to buy in order to have the amount she needs?

3.5-1.5 meters = ? centimeters

just answer it!

To find out how many centimeters of ribbon Melanie needs to buy, we need to convert the lengths to the same unit. Since Melanie needs 3.5 meters of ribbon, we can convert this to centimeters.

1 meter is equal to 100 centimeters (cm). Therefore, 3.5 meters is equal to 3.5 x 100 = 350 centimeters.

Melanie already has 1.5 meters of ribbon, which is equal to 1.5 x 100 = 150 centimeters.

To find out how many more centimeters of ribbon Melanie needs to buy, we subtract the amount she already has from the total amount she needs:

350 cm - 150 cm = 200 cm.

Therefore, Melanie needs to buy 200 centimeters of ribbon in order to have the amount she needs.

To solve this problem, we need to convert the given measurements into the same unit. In this case, we need to convert meters to centimeters.

First, let's convert 3.5 meters to centimeters. Since 1 meter is equal to 100 centimeters, we can multiply 3.5 by 100 to get the length in centimeters:
3.5 meters * 100 cm/meter = 350 centimeters.

Next, let's convert 1.5 meters to centimeters using the same conversion factor:
1.5 meters * 100 cm/meter = 150 centimeters.

Now, we can find out how much more ribbon Melanie needs by subtracting the length she already has from the amount she needs:
350 centimeters - 150 centimeters = 200 centimeters.

Therefore, Melanie needs to buy 200 centimeters of ribbon to have the amount she needs.