1. Chapter 1.3 Conversion Factors and Unit Cancellation

2. I- Unit Conversion a) 1 foot = 12 inches 1 foot 12 inches = 1 12 inches 1 foot = 1 These are “Conversion factors” Which one you use depends on what you want to do b) c)

3. Steps to converting units 1) Write the number (with units) that you want to convert. 2) Multiply it by a conversion factor, written as a fraction 3) Make sure the OLD units cancel (tells you which way the conversion factor goes) 4) Multiply the numbers on top and divide by the numbers on the bottom.

4. How many inches in 4.3 feet? 1) Write the number (with units) that you want to convert. 2) Multiply it by a conversion factor, written as a fraction

5. 3) Make sure the OLD units cancel (tells you which way the conversion factor goes) 4) Multiply the numbers on top and divide by the numbers on the bottom.

6. Convert 52.8 hours to days 1) Write the number (with units) that you want to convert. 2) Multiply it by a conversion factor, written as a fraction

7. 3) Make sure the OLD units cancel (tells you which way the conversion factor goes) 4) Multiply the numbers on top and divide by the numbers on the bottom.

8. How many kilometers are in 2.5 miles? 1) Write the number (with units) that you want to convert. 2) Multiply it by a conversion factor, written as a fraction

9. 3) Make sure the OLD units cancel (tells you which way the conversion factor goes) 4) Multiply the numbers on top and divide by the numbers on the bottom.