5 Adding and Subtracting Significant Figures
Significant Figures
When using significant figures in calculations, for simple adding and subtracting functions, the measurement with the least significant figures will determine the ending place for the significant figures.
Perform the calculation and determine the number of significant figures.
Calculation |
Answer with Significant Figures |
Number of Significant Figures |
| 13.05 + 2.901 = | ||
| 4.800 + 3.2 = | ||
| 31.06 + 32.940 | ||
| 3.90 + 0.00891 = | ||
| 9.20 + 0.8 = | ||
| 2.91 – 0.85 = | ||
| 16.435 – 5.9 = | ||
| 6.068 – 9.81 = |