Key learning points

1. Conversions are often used
2. Estimation can be used to help calculate a likely crop yield

Keywords

• Area - The area is the size of the surface and states the number of unit squares needed to completely cover that surface.

• Estimate - A quick estimate for a calculation is obtained from using approximate values, often rounded to 1 significant figure.

• Mean - The (arithmetic) mean for a set of numerical data is the sum of the values divided by the number of values. It is a measure of central tendency representing the average of the values.

Common misconception