SKILLS FOR SCIENCE
scientific notation
NX 104
widecimal number 0-10 rounded off to a few decimal places
n
:
exponents integer < n >0
·
>0
:
how many x decimal place N moved to the right
n <0 x N should move left
· :
3 , 24 represents 3240 103 >0 , 00324
eg .
x 10
eg .
3 , 24 x
>
decimal
right moved 3x decimal moved 3x left)
·
converted into scientific notation :
·
work out how many no must multiply/divide by 10
find the value of N
Steps :
subtracting sci notation
1. make all exponents
adding 3
the same
-2 2 2=
?
-
1 99 x10
. + 1 , 67 x 10 -
2 , 79 X 18- =
addition
10 -
z .
carry out
1 . 99 x =
0
, 199 x 102 and subtraction N
-
- 2
1 67 x 0 , 0167
=
, 10 x 10
.
3 Write the final
0 199 #0 , 0167 -
2 , 74 = -
2 5743 answer
, ,
25
-
25743x10
-
multiplication a division with scientific notation
Steps :
1, 6x10-1 X 3 , 2 x10 :
S x10-2
( , 5 x 3, 2) x 1819
+
( 19)
-
.
addexponent meet
-
38
=
S , 12 x 10 .
2 subtract exponents
↳ divide N terms 3=
S , 12 x 10-38 : SX102
=
(5 , 12 :
5) 1838-(-2) .
3 Write final answer
"
-
=
1 , 024 X 10
, UNITS physical quantity :
main systems of units are : ·
anything you can
· measure
sl units
·
·
length , temperature ,
c units
.
g . S
distance 3 time
imperial units
·
·
have units which can
natural units be built from
·
the
> base units
si units
international system of units
I base units
length metre m
mass kilogram k9
time second S
electric current ampere A
temperature kelvin I
amount of mule mol
substance
luminous candela ed
intensity
scientific notation
NX 104
widecimal number 0-10 rounded off to a few decimal places
n
:
exponents integer < n >0
·
>0
:
how many x decimal place N moved to the right
n <0 x N should move left
· :
3 , 24 represents 3240 103 >0 , 00324
eg .
x 10
eg .
3 , 24 x
>
decimal
right moved 3x decimal moved 3x left)
·
converted into scientific notation :
·
work out how many no must multiply/divide by 10
find the value of N
Steps :
subtracting sci notation
1. make all exponents
adding 3
the same
-2 2 2=
?
-
1 99 x10
. + 1 , 67 x 10 -
2 , 79 X 18- =
addition
10 -
z .
carry out
1 . 99 x =
0
, 199 x 102 and subtraction N
-
- 2
1 67 x 0 , 0167
=
, 10 x 10
.
3 Write the final
0 199 #0 , 0167 -
2 , 74 = -
2 5743 answer
, ,
25
-
25743x10
-
multiplication a division with scientific notation
Steps :
1, 6x10-1 X 3 , 2 x10 :
S x10-2
( , 5 x 3, 2) x 1819
+
( 19)
-
.
addexponent meet
-
38
=
S , 12 x 10 .
2 subtract exponents
↳ divide N terms 3=
S , 12 x 10-38 : SX102
=
(5 , 12 :
5) 1838-(-2) .
3 Write final answer
"
-
=
1 , 024 X 10
, UNITS physical quantity :
main systems of units are : ·
anything you can
· measure
sl units
·
·
length , temperature ,
c units
.
g . S
distance 3 time
imperial units
·
·
have units which can
natural units be built from
·
the
> base units
si units
international system of units
I base units
length metre m
mass kilogram k9
time second S
electric current ampere A
temperature kelvin I
amount of mule mol
substance
luminous candela ed
intensity
