This document discusses units and measurements conversions. It explains that prefixes like centi and milli indicate fractions of base units and conversions can be done using ratios of equivalent units. For example, 1 inch is equal to 2.54 centimeters. It also notes that algebraic manipulation of units is similar to variables, where units cancel out in operations like division. Rounding may be needed in conversions to avoid exact answers. Practice problems are provided to convert between units like centimeters and inches using equivalent ratios.

1. Units & Measurements Conversions and how they work!

2. Conversion By Name “ centi”-means one hundredth, “milli” means one thousandth kilo Centi 1/100 Milli 1/1000 start

3. We have used many units in this class so far! Remember: The Loop, The Cord, The “Yardstick” We can easily convert from one unit to the next by using “Conversion Factors” AKA ratios we already know or can find out! 1 in. = 2.54 cm 1 pcord = ??? cm 1 hoop = ??? In. Do you see where I am going???

5. We are using equivalent equations to convert…. CM to INCHES Complete on calculator! Mr. Cadray talk to me about rounding please… read p. 5 and post questions

7. Other nice things to know when converting Sometimes we need to round! This will make our answer not exact! Or Approximate Let’s Practice a Few!

8. Geometric Drawings and Pictures length can be described without units, given units are all the same  AB = 5 and BC = 10, AB + BC = AC, so AC = 5 + 10 or AC= 15 length given as an equation (equals number or equals name) AB = 5 or AC = AB + BC When a drawing is not present, start the problem drawing and writing all known lengths recognize parallel notation