You need garden edging for a garden that has a perimeter of 14m. Edging comes in 1800mm lengths. How many lengths will you need to buy to have enough edging for the entire perimeter?

To find how many lengths of garden edging you need to buy, follow these steps:

1. **Convert the perimeter to millimeters**: Since the edging lengths are provided in millimeters (mm), we need to convert the perimeter from meters to millimeters.
   \[
   14 \, \text{meters} = 14,000 \, \text{millimeters}
   \]

2. **Determine how many edging pieces are needed**: Each length of edging is 1800 mm. To find out how many lengths you need:
   \[
   \frac{14,000 \, \text{mm}}{1800 \, \text{mm per length}} = 7.78
   \]

3. **Round up to the nearest whole number**: Since you can't buy a fraction of a length, round up to the nearest whole number.
   \[
   7.78 \approx 8
   \]

Therefore, you will need to buy **8 lengths** of garden edging.

Would you like more details or have any questions?

Here are 5 related questions you might find useful:
1. How would the calculation change if the perimeter was in feet instead of meters?
2. What if the edging came in different lengths, say 1500mm or 2000mm?
3. How much total edging (in meters) will you have left over after covering the garden?
4. What if the garden shape was not rectangular but circular? How would you calculate the edging?
5. Could you use a combination of different edging lengths to reduce waste?

**Tip**: Always double-check unit conversions when working with measurements!

Find out how many garden edging lengths you need for a garden with a 14-meter perimeter. This problem involves unit conversion from meters to millimeters, division, and rounding up to ensure complete coverage. Suitable for students in Grades 5-7.

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