Transcript Grootheden, eenheden en factor

Quantities and Units
Quantities
factor
units
Quantity and unit
Quantity
• Subject / measureable
• First two columns from binas table 6
Quantity and unit
Think about:
capital letters and small
letters!!!!!!
20 drops of water
makes about 1 milliliter
Unit
• Size / is behind the number
• Where do you put the number
• Last two columns from Binas table 6
Factor
Metric mathematics
Factor
Metric mathematics
Factor
Metric mathematics
• Letters to make numbers easier to write
• See binas table 3 for value and abbreviation
(letter)
• The letter comes before the factor!
• milli
• Kilo
m
k
x 1/1000
x1000
Metriek
What is scientific
2
10
𝑚𝑒𝑎𝑛𝑠 10 × 10 = 100
103 𝑚𝑒𝑎𝑛𝑠 10 × 10 × 10 = 1000
Numbers above 10 you say are “to the power of….”
The number indicates the number of zeros after the
one.
Factor
Metric mathematics
• Now we can also write the metric system
scientifically.
Factor
Metric mathematics
•
•
•
•
•
•
•
•
•
micro
milli
centi
deci
μ
m
c
d
deca
hecto
kilo
Mega
da
h
k
M
0,000001
0,001
0,01
0,1
1
10
100
1.000
1.000.000
10−6
10−3
10−2
10−1
100
101
102
103
106
Factor
Metric mathematics
Factor
Why scientific
Factor
What do you write
Quantity is number factor
=
10
s
k
s
=
10
s
=
10
s
=
10
s
=
10
d
c
m
μ
unit
m
m
m
m
m
Factor
What does it mean
Quantity
is number ● factor
s
=
10
●
s
=
10
●
s
=
10
●
s
=
10
●
s
=
10
●
𝟏𝟎𝟎𝟎
unit
(k)
𝟏
(d)
𝟏𝟎
𝟏
(c)
𝟏𝟎𝟎
𝟏
(m)
𝟏𝟎𝟎𝟎
𝟏
(μ)
𝟏𝟎𝟎𝟎𝟎𝟎𝟎
m
m
m
m
m
Grootheid, Factor en Eenheid
Quantity = number ● factor unit
• m = 10 mg
=
10 ● 10−3 g
= 0,01 g
• t = 10 ms
=
10 ● 10−3 s
= 0,01 s
• s = 10 km
=
10 ● 103 m
= 10.000 m
Factor
What does it mean
See binas table 3 for the factor
Quantity
is number
m
=
10
m
=
10
m
=
10.000
t
=
10
t
=
10
t
=
0.00001
●
● factor
unit
k
g
g
𝟏𝟎𝟎𝟎 (𝟏𝟎𝟑 )
g
μ
●
𝟏
𝟏𝟎𝟎𝟎𝟎𝟎𝟎
(𝟏𝟎−𝟔 )
s
s
s
Factor
2 kinds of rows
 Point and right
→ Point and left
Steps of 10
m
c
d
_ da h k
10−3 10−2 10−1 100 101 102 103
Steps of 1000
n
µ
m _
k M G
10−9 10−6 10−3 100 103 106 109