# How do you calculate the following to the correct number of significant figures?

##
a) #(1.27g)/(5.296 mL)#

b) #(12.235 g)/( 1.01 L)#

c) #(17.3 g + 2.785 g) / (30.20 mL)#

a)

b)

c)

##### 1 Answer

a)

b)

c)

#### Explanation:

When dividing, the quotient should have the same number of significant figures as the smaller number of sig figs in either the dividend or divisor.

When adding, the sum should have the same number of signficant figures as the "least accurate" place in the addends.

a)

which I will round to

b)

which I will round to

c)

First add the numbers in the numerator.

Next, complete the division.

which I will round to

https://www.youtube.com/playlist?list=PL3hPm0ZdYhyy0PQUQ1ka94hxVQPdYGS9m