Name__________________________________Period_______Date
Name__________________________________Period_______Date_________
Significant Figures
Counting Significant Figures
Atlantic-Pacific Rule: In numbers written with decimal points (present), count significant figures from the left (pacific side). In numbers written without decimal points (absent), count from the right (atlantic side) beginning with the first nonzero digit.
1. How many significant figures are in each of the following measurements?
a. 0.0370 g. 0.23100
b. 200 h. 23,100
c. 20. i. 23,100.
d. 20.0 j. 7.203
e. 400,900 k. 0.00231
f. 0.00990 l. 2000
Calculating With Significant Figures
When you use measurements in calculations, your answer may only be as exact as your least exact measurement.
Rule for Addition and Subtraction: Round to the fewest decimal places.
2. Perform the following calculations, and round off your answer correctly:
a. 4.1 cm + 0.07 cm
b. 18.3 m – 11 m
c. 8.120 g – 7.090 g
Rule for Multiplication and Division: Round to the fewest significant figures.
3. Perform the following calculations, and round off your answer correctly:
a. 4.1 cm x 0.07 cm
b. 7.079 cm / 0.53 s
c. 8.120 m x 7.090 m
Practice Problems: Perform the following calculations and complete the table.
| | |Unrounded Answer |Rounded Answer |
|4. |45.71 cm x 0.20 cm | | |
|5. |10.2 m / 0.4 s | | |
|6. |100. mm – 1.6 mm | | |
|7. |4302 g + 0.837 g | | |
|8. |87.3 cm – 1.655 cm | | |
|9. |2.099 g + 0.05681 g | | |
|10. |2.4 g/mL x 15.82 mL | | |
|11. |105.725 g / 39.1 mL | | |
Using an Equation
The ratio of mass to volume for a substance is called its density. This relationship can be expressed by the following equation: D = M/V
Use the density equation given above to solve the following problems. Be sure to round off your answer correctly.
12. What is the density of a sample of mercury that has a mass of 39.60 g and a volume of 9.00 cm3?
13. Granite has a density of 4.67 g/cm3. What is the mass of 50 cm3 of granite?
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- rules for using significant figures in mathematical operations
- significant figures practice worksheet
- significant figures sch3u
- chemistry worksheets
- unit 1 metric system significant figures factor label
- university of missouri
- use of significant digits
- name period date
- unit conversions scientific notation and significant digits
- using significant figures
Related searches
- date to date time calculator
- subtract today s date from another date excel
- date to date duration calculator
- period due date calculator
- date from a date calculator
- last menstrual period due date calculator
- calendar date to date calculator
- from date to date calculator
- character date to numeric date sas
- convert character date to numeric date sas
- date to date duration calendar
- date to date calculator