- What is the number greater than 0?
- What is a right end zero?
- What does an insignificant zero do?
- Why are trailing zeros not significant?
All whole numbers greater than 0 are also called the positive integers. the positive integers start with the number one and go all the way to infinity. On a number line the positive integers all lie to the right of 0.
Zeros that appear after all nonzero digits are called right-end zeros. Right-end zeros in a number that lacks a decimal point are not significant. Right-end zeros in a number with a decimal point are significant. This is true whether the zeros occur before or after the decimal point.
An insignificant zero functions as a placeholder for the decimal point. For a number with left-end zeros, such as 0.000416, it can be written as 4.16 × 10−4 with 3 significant figures. In some cases, scientific notation is the only way to correctly indicate the correct number of significant figures.
The trailing zeros do not count as significant. Trailing zeros in a number containing a decimal point are significant. For example, if a measurement that is precise to four decimal places (0.0001) is given as 12.23, then the measurement might be understood as having only two decimal places of precision available.