Measurement and Energy (HSC SSCE Mathematics Standard): Quizzes

The smallest unit readable on it

Using multiple measurements

$\pm \frac{1}{2} \times \text{precision}$

$\pm 1$ mm

50.5 mm

19.5 cm

$\pm \frac{\text{Absolute error}}{\text{Measurement}}$

$\pm \frac{\text{Abs error}}{\text{Measurement}} \times 100\%$

$\pm 2\%$

Shows how significant error is vs measurement size