Copy of 5.0 Chem-Unit 1 Notes: Rounding

Round 0.0634999 to 2 sig digs

• 0.063

• 0.63

• 0.064

• 0.64

When adding or subtracting, you round off according to the least number of ________.   And when you are multiplying or dividing, you round off according to the least number of ________. 

• decimal places / significant digits

• significant digits / decimal places

• decimal places / decimal places

• significant digits / significant digits