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Aim: How can we convert units?

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Aim: How can we convert units? - PowerPoint PPT Presentation


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Aim: How can we convert units?. Do Now: Calculate the following with the correct number of significant figures: (2.53 x 10 6 ) (6 x 10 4 ) 5 x 10 -2. Answer: 3 x 10 12. Conversions. Convert 5.2 cm to m Know your conversion factor 1 cm = 1/100 m or

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slide1

Aim: How can we convert units?

Do Now:

Calculate the following with the correct number of significant figures:

(2.53 x 106) (6 x 104)

5 x 10-2

Answer: 3 x 1012

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Conversions

  • Convert 5.2 cm to m
  • Know your conversion factor
  • 1 cm = 1/100 m
  • or
  • 1 m = 100 cm
  • Hint: The larger number gets paired with the smaller unit
  • 2. Write out your given and follow it with times and a fraction bar
  • 5.2 cm x ______________________
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3. Place your conversion factor into the fraction bar in such a way that you cancel out the original unit

5.2 cm x 1/100 mor 5.2 cm x 1 m

1 cm 100 cm

4. Solve

0.052 m

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Multiple Step Conversions

  • A method of converting from one prefix to another
  • Convert 5.30 km to mm

x 1000 mm

1 m

5.3 km x 1000 m

1 km

= 5.3 x 106 mm

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Problems

  • Convert:
  • 10.2 mm to m
  • 342 g to kg
  • 5000 m to km
  • 5.2 kg to g
  • 10,500 cm to m
  • 10 m to km
  • 250 mL to L
  • 2 km to cm
  • 10 kg to μg
  • 5 kg to mg

0.0102 m

0.342 kg

5 km

5,200 g

105 m

0.01 km

0.25 L

200,000 cm

10,000,000,000 μg

5,000,000 mg

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