Significant Figures and Decimal Points

On 12 February 2014, my Science teacher taught us about significant figures and decimal points!

Regarding the topic of significant figures, there are a few rules regarding significant figures.

Firstly, Non-zero digits are always significant.

Secondly, All final zeros after the decimal point are significant.

Thirdly, Zeros between two other significant digits are always significant.

Fourthly, Zeros used for only spacing the decimal are not significant.

Besides, I  also learnt about the Calculation of Physical Data. I also did learn some news stuff to expand my knowledge!

For example, for Addition and Subtraction, The final value has the same number of decimal place / same place value as the least precise measurement.

For Multiplication and Division, The product / quotient has the same number of significant figures as the number with the least number of significant figures.

For Average, The final value has the same number of decimal place / same place value as the least precise measurement.

Meanwhile, for Constant, The number of decimal place / place value of a constant is not considered in a calculation.

In addition to this, I also learned about the accuracy of devices, the smallest division and the amount of uncertainty that each apparatus had!