Chemistry Problem Solving Videos @ WVU

Chem 110A - Prep Chem

Ch.1 - Addition and Subtraction Rules

Complete the following calculation using addition and subtraction rules for measured numbers:

 

87.01 + 9.2 = ?

 

149 - 57.7 = ?

 

7.0 + 8.0 + 90.0 = ?

 

0.00413 + 0.997 = ?