# Homework Help: Lab- Calculate Relative Uncertainty, How many sig figs?

1. Jun 11, 2014

### ChiralWaltz

1. The problem statement, all variables and given/known data

Calculate the relative uncertainty in the mass
mass (M) = 1.0 grams

2. Relevant equations

$\frac{\delta M}{M}$

3. The attempt at a solution

$$\delta M = \pm0.05g$$
$$\frac {0.05g}{1.0g} = 0.05$$

or
$$\frac {0.05g}{1.0g} = 0.050$$

Which one has the appropriate amount of sig figs?