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Chapter 1 Measurements. Prefixes and Equalities. Metric Prefixes. Increase or decrease basic unit by 10 Form new units larger or smaller than the basic units Indicate a numerical value prefix=value 1 kilo meter= 1000 meters 1 kilo gram= 1000 grams.

Chapter 1 Measurements

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Prefixes and

Equalities

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- Increase or decrease basic unit by 10
- Form new units larger or smaller than the basic units
- Indicate a numerical value
prefix=value

1 kilometer=1000 meters

1 kilogram=1000 grams

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PrefixSymbolValue

giga-G1 000 000 000

mega-M1 000 000

kilo-k1 000

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PrefixSymbolValue

deci-d0.1

centi-c0.01

milli-m0.001

micro- (mu)0.000 001

nanon0.000 000 0001

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Match 1) length 2) mass 3) volume

____ A. A bag of tomatoes is 4.6 kg.

____ B. A person is 2.0 m tall.

____ C. A medication contains 0.50 g Aspirin.

____ D. A bottle contains 1.5 L of water.

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Match 1) length 2) mass 3) volume

_2 A. A bag of tomatoes is 4.6 kg.

_1_ B. A person is 2.0 m tall.

_2_ C. A medication contains 0.50 g Aspirin.

_3_ D. A bottle contains 1.5 L of water.

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Select the unit you would use to measure

A. Your height

1) millimeters2) meters 3) kilometers

B. Your mass

1) milligrams2) grams 3) kilograms

C. The distance between two cities

1) millimeters2) meters 3) kilometers

D. The width of an artery

1) millimeters2) meters 3) kilometers

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A. Your height

2) meters

B. Your mass

3) kilograms

C. The distance between two cities

3) kilometers

D. The width of an artery

1) millimeters

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Indicate the prefix to use for

1. A mass that is 1000 times greater than 1 gram

1) kilo2) milli3) mega

2. A length that is 1/100 of 1 meter?

1) deci2) centi3) milli

3. A unit of time that is 1/1000 of a second.

1) nanosecond 2) microsecond 3)millisecond

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1. 1) kilo

2. 2) centi

3. 3) millisecond

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State the same measurement in two different units

length

10.0 in.

25.4 cm

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Length

1 m = 100 cm

Mass

1 kg = 1000 g

Volume

1 L=1000 mL

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A. 1000 m = 1 ___1) mm 2) km3) dm

B. 0.001 g = 1 ___ 1) mg2) kg3) dg

C. 0.1 L = 1 ___1) mL2) cL3) dL

D. 0.01 m = 1 ___ 1) mm 2) cm3) dm

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A. 1000 m = 1 ___2) km

B. 0.001 g = 1 ___ 1) mg

C. 0.1 L = 1 ___3) dL

D. 0.01 m = 1 ___ 2) cm

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Give the value of the following units:

A. 1 kg = ____ g

1) 10 g2) 100 g 3) 1000 g

B. 1 mm = ____ m

1) 0.001 m2) 0.01 m 3) 0.1 m

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A. 1 kg = ____ g

3) 1000 g

B. 1 mm = ____ m

1) 0.001 m

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1 ft= inches

1 lb=16 oz

1 quart = pints

1 quart=4 cups

Why are the quantities in each pair equal?

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1 ft=12 inches

1 lb=16 oz

1 quart = 2 pints

1 quart=4 cups

The quantities in each pair give the same measured amount in two different units.

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1 in.=2.54 cm

1 qt=946 mL

1 L=1.06 qt

1 lb = 454 g

1 kg=2.20 lb

Remember these for exams.

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Example 1

At the store, the price of one pound of red peppers is $2.39.

Equality: 1 lb red peppers =$2.39

Example 2

At the gas station, one gallon of gas is $1.34.

Equality: 1 gallon of gas=$1.34

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Fractions in which the numerator and denominator are quantities expressed in an equality between those units

Example: 1 in. = 2.54 cm

Factors: 1 in. and 2.54 cm

2.54 cm 1 in.

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Write conversion factors that relate each of the following pairs of units:

A. Liters and mL

B. Hours and minutes

D. Meters and kilometers

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A. quarts and mL 1 L = 1000 mL

1 L and 1000 mL

1000 mL 1 L

B. hours and minutes1 hr = 60 min

1 hr and 60 min

60 min1 hr

C. meters and kilometers 1 km = 1000 m

1 km and 1000 m

1000 m 1 km

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