1. Significant Figures and Decimal Digits
Chained Calculations

2. Problem: Convert 77.4 K into F
First convert 77.4 K into C using the following formula:
TC = TK –
TC = –
TC = C
1 Decimal
2 Decimals
1 Decimal
Stopping here? TC = C

3. Problem: Convert 77.4 K into F
Next convert C (un-rounded) into F using the following formula:
TF = 1.8  TC
TF = 1.8  ( )
TF =
TF = F

4. Problem: Convert 77.4 K into F
Next convert C (un-rounded) into F using the following formula:
TF = 1.8  TC
TF = 1.8  ( )
TF =
TF = F
4 Sig. Figs.
Exact
4 Sig. Figs. …
1 decimal
1 decimal
TF = F
1 decimal