Scientific Notation

A method used to SIMPLIFY a number by:

• Moving the comma• Multiplying by 10x

Convert to Scientific Notation

If number is

Smaller than one• Comma moves

right• x is negative

Larger than one• Comma moves

left• x is positive

Convert to Scientific NotationExample 1

Convert 0,0043 to scientific notation

0, 0 0 4 3

= 4,3 -3

1 2 3

x 10

Convert to Scientific NotationExample 2

Convert 81500 to scientific notation

8 1 5 0 0,0

= 8,15 x 104

1234

Convert from Scientific Notation

If x is

Negative• Number < 1• Comma should move

to the left

Positive• Number > 1• Comma should move

to the right

Convert to a Decimal NumberExample 1

Convert 5,34 x 105 to a decimal number

5, 3 4 x 105 1 2 3 4 5

534000=

Convert to a Decimal NumberExample 2

Convert 2,04 x 10-4 to a decimal number

2,04 x 10-4 1234

4020000,=

SI - Units

SIUnits

A standard set of units used to define and measure quantities

internationally

tandardnternational

SI - Units7 Base Units

Quantity SI-Unit Abbr.

metres m

seconds s

kilograms

Ampère

Kelvin

candela

mole

kg

A

K

cd

mol

Length/ Distance

Time

Mass

Electric Current

Temperature

Light IntensityAmount of Matter

SI - UnitsDerived Units

Quantity SI-Unit Abbr.

litres/ cubic metres

l/ m3

Newton N

Joules

Pascal

J

Pa

Volume

Force

Energy

Pressure

SI - UnitsPrefixes

Prefix Abbr. Factor

T

G

M

k

h

da/ D

Terra

Giga

Mega

Kilo

hekto

deka

1012

109

106

103

102

101

X Factor = Base Unit

SI - UnitsPrefixes

Prefix Abbr. Factor

c

d

m

µ

n

p

centi

desimilli

micro

nano

pico

10-1

10-2

10-3

10-6

10-9

10-12

X Factor = Base Unit

ffemto 10-15