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

To determine how many lengths of garden edging you need, we can follow these steps:

1. **Convert the total perimeter to millimeters** since the garden edging is measured in millimeters:
   \[
   14 \, \text{m} = 14,000 \, \text{mm}
   \]

2. **Divide the total perimeter by the length of one piece of garden edging** (1800 mm):
   \[
   \frac{14,000 \, \text{mm}}{1800 \, \text{mm}} = 7.78
   \]

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

You will need to buy **8 lengths** of garden edging to cover the entire perimeter.

Would you like more details or have any questions about this? Here are some related questions:

1. How would the calculation change if the perimeter were 20 meters?
2. What if the garden edging came in lengths of 2000 mm instead?
3. How many pieces would you need if the perimeter was measured in feet instead of meters?
4. How can you minimize waste if the edging came in smaller increments?
5. What factors could affect the actual number of pieces needed (e.g., corners, overlaps)?

**Tip:** When working with different units, always ensure consistency (convert everything to the same unit).

Find out how many 1800mm garden edging lengths are needed to cover a 14-meter perimeter. This solution covers key concepts like measurement conversion, division, and rounding. Perfect for students in Grades 5-7.

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