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# 2.E: Measurement and Problem Solving (Exercises)

2.1: Measuring Global Temperatures

2.2: Scientific Notation: Writing Large and Small Numbers

2.3: Significant Figures: Writing Numbers to Reflect Precision

1. Define significant figures. Why are they important?

2. Define the different types of zeros found in a number and explain whether or not they are significant.

3. How many significant figures are in each number?

1. 140
2. 0.009830
3. 15,050
4. 221,560,000
5. 5.67 × 103
6. 2.9600 × 10−5
4. How many significant figures are in each number?

1. 1.05
2. 9,500
3. 0.0004505
4. 0.00045050
5. 7.210 × 106
6. 5.00 × 10−6
5. Round each number to three significant figures.

1. 34,705
2. 34,750
3. 34,570

2.4: Significant Figures in Calculations

2.5: The Basic Units of Measurement

2.6: Problem Solving and Unit Conversions

2.7: Solving Multistep Conversion Problems

2.8: Units Raised to a Power

2.9: Density

2.10: Numerical Problem-Solving Strategies and the Solution Map