# SI UNITS - PowerPoint PPT Presentation

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SI UNITS . and CONVERSION CALCULATIONS. Table 1: SI Base Units. Table 2: Prefixes. QUESTION : 2.65 kg = _______ g ANSWER: 2.65 kg X 1000 g = 2650 g 1kg Numerator (kg) and Denominator (kg) units cancel to leave grams (g)! OR -- move decimal three places to the right.

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SI UNITS

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## SI UNITS

and CONVERSION CALCULATIONS

CAFarrer 2013

CAFarrer 2013

### Table 2: Prefixes

CAFarrer 2013

QUESTION : 2.65 kg = _______ g

2.65 kg X 1000 g = 2650 g

1kg

Numerator (kg) and Denominator (kg) units cancel to leave grams (g)!

OR -- move decimal three places to the right

### Metric to Metric Conversions

CAFarrer 2013

Ex. 167 cm = __________ m

• 5347 L = __________ mL

• 48 mg = __________ g

• 0.645 cm = __________ mm

• 789 mL = __________ L

• 4370 g = __________ kg

• 9677 mL = ___________ mL

### TRY THESE! (USE THE RATIO FOR DIMENSIONAL ANALYSIS!!) SEE SLIDES # 3 AND 4)

CAFarrer 2013

167 cm X 1 m / 100 cm = 1.67m

• 5347 L X 1000 mL/ 1L =5.347mL

• 48 mg X 1 g/ 1000 mg = 0.048 g

• 0.645 cm X 1 m / 100 cm X 1000 mm/ 1 m = 6.45 mm

• 789 mL X 1 L / 1000 mL= 0.789 L

• 4370 g X 1 kg / 1000 g = 4.370 kg

• 9677 mL X 1 L / 1000000 mL X 1000 mL/ 1 L = 9.677 mL

CAFarrer 2013

TABLE 3: SELECTED SI EXPRESSIONS WITH SI UNITS AND SYMBOLS

CAFarrer 2013

CAFarrer 2013

### Table 5: English to Metric

CAFarrer 2013

• 525 cm = __________ in

• 645 mL = __________ tsp

• 330 g = __________ lbs

• 50 mi = __________ km

• 56 gal X = __________ L

• 345 oz = __________ g

### Conversion Calculations – TRY THESE!!

CAFarrer 2013

• 525 cm X 1 in / 2.54 cm = 206.7 in

• 645 mL X 1tsp/ 5 mL = 129 tsp

• 330 g X 1 kg/ 1000 g X 2.2lbs/ 1 kg = 0.15 lbs

• 50 mi X 0.6 km / mi = 30 km

• 56 gal x 3.785 L / gal = 212 L

• 345 ozX 28.4 g / oz = 9798 g