Jess needs 200 pieces of ribbon, each of length 110cm, to decorate a room for a party. Ribbon is sold in rolls of 25m each.  What is the least number of rolls of ribbon that Jess needs to buy?

To determine the least number of rolls of ribbon Jess needs to buy, we need to follow these steps:

1. Calculate the total length of ribbon Jess needs.
2. Convert the length from centimeters to meters, if necessary.
3. Determine how many rolls are required based on the total length needed and the length provided by each roll.

### Step 1: Calculate the total length of ribbon needed
Jess needs 200 pieces of ribbon, each of length 110 cm.

\[ \text{Total length in cm} = 200 \times 110 = 22000 \text{ cm} \]

### Step 2: Convert the total length from centimeters to meters
Since ribbon is sold in meters, we need to convert the total length from centimeters to meters.

\[ 1 \text{ meter} = 100 \text{ cm} \]

\[ \text{Total length in meters} = \frac{22000}{100} = 220 \text{ meters} \]

### Step 3: Determine the number of rolls required
Each roll of ribbon provides 25 meters of ribbon.

\[ \text{Number of rolls required} = \frac{220}{25} \]

Perform the division to find the exact number of rolls needed.

\[ \frac{220}{25} = 8.8 \]

Since Jess cannot buy a fraction of a roll, she needs to round up to the nearest whole number.

\[ \text{Number of rolls required} = \lceil 8.8 \rceil = 9 \]

Therefore, Jess needs to buy **9 rolls** of ribbon.

Would you like more details on any part of this solution or have any questions? Here are five related questions you might want to ask:

1. How to calculate the cost if each roll has a price?
2. How to convert other measurements from cm to meters?
3. How to handle scenarios where the ribbon length needed is in different units?
4. What if Jess finds a roll with a different length, how does that change the calculation?
5. How to calculate the leftover ribbon after cutting the required pieces?

**Tip:** Always ensure your units are consistent when performing calculations to avoid errors.

Learn how to calculate the least number of rolls of ribbon needed for decorating a room for a party. Follow a step-by-step solution to convert lengths from centimeters to meters and determine the number of ribbon rolls required based on given measurements.

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