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Ch
apte
r 2
In a
dd
itio
n to
ass
isti
ng
p
hysi
cian
s, r
egis
tere
d
nu
rses
wo
rk to
pro
mo
te
pat
ien
t he
alth
an
d p
reve
nt
and
tre
at d
ise
ase.
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Wri
te th
e n
ame
s an
d a
bb
revi
atio
ns
for
the
me
tric
or
SI u
nit
s fo
r:
len
gth
, vol
um
e, m
ass,
tem
per
atu
re, a
nd
tim
e.
Scie
nti
sts
use
the
met
ric
syst
emo
f me
asur
em
en
t an
d a
m
od
ifie
d v
ers
ion
cal
led
Le
Syst
eme
Inte
rnat
ion
al
d’U
nit
es(S
I u
nit
s) a
s an
off
icia
l sys
tem
use
d th
roug
ho
ut
the
wo
rld
for
unit
s o
f le
ng
th, v
olu
me,
mas
s, te
mp
era
ture
, an
d ti
me.
Len
gth
in th
e m
etr
ic a
nd
SI s
yste
ms
is b
ase
d o
n th
e m
ete
r, w
hic
h is
sli
gh
tly
lon
ge
r th
an a
yar
d.
1 m
= 1
00 c
m1
m =
39.
4 in
1 m
= 1
.09
yd2.
54 c
m =
1 in
Vo
lum
e is
the
sp
ace
occ
upie
d b
y a
sub
stan
ce.
Met
ric
un
it: m
3
SI u
nit
: lit
er
1 L
= 1
000
mL
1 L
= 1
.06
qt
946
mL
= 1
qt
Th
e m
ass
of a
n o
bje
ct is
a m
eas
ure
of
the
qua
nti
ty o
f mat
eri
al it
co
nta
ins.
1
kg
=
100
0 g
1 k
g
= 2
.20
lb45
4 g
= 1
lb
Met
ric
un
it: g
ram
s (g
)SI
un
it: k
ilog
ram
s (k
g)
On
an
ele
ctro
nic
bal
ance
, th
e
dig
ital
re
ado
ut g
ive
s th
e m
ass
of a
nic
kel,
wh
ich
is 5
.01
g.
Tem
pe
ratu
re te
lls
us h
ow h
ot o
r co
ld
som
eth
ing
is.
Met
ric
syst
em: C
elsi
us
(°C
)SI
sys
tem
: Kel
vin
(K)
Wat
er
fre
eze
s at
32°
F, o
r 0°
C, o
r 27
3.15
K
Th
e K
elv
in s
cale
for
tem
pe
ratu
re b
eg
ins
at th
e lo
we
st p
oss
ible
tem
pe
ratu
re, 0
K
Tim
e is
me
asur
ed
in u
nit
s su
ch a
s:Ye
ars
(yr)
Day
s H
our
s (h
)M
inut
es
(min
)Se
con
ds
(s)
Th
e S
I an
d m
etr
ic u
nit
for
tim
e is
the
se
con
d (
s).
Wh
at a
re th
e S
I un
its
for
the
foll
owin
g?
A.
Vo
lum
e
B.
Mas
s
C.
Len
gth
D.
Tem
pe
ratu
re
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Ide
nti
fy a
num
be
r as
me
asur
ed
or
exac
t
De
term
ine
the
num
be
r o
f sig
nif
ican
t fig
ure
s in
a m
eas
ure
d
num
be
rs
Mea
sure
d n
um
ber
s: a
re th
e n
umb
ers
ob
tain
ed
wh
en
yo
u m
eas
ure
a q
uan
tity
suc
h a
s yo
ur h
eig
ht,
we
igh
t, o
r te
mp
era
ture
.
Tak
ing
a m
eas
ure
me
nt:
No
tice
the
num
be
rs a
nd
m
ark
s at
the
en
d o
f th
e
ob
ject
.
Estim
ate
the
fin
al d
igit
b
etw
ee
n th
e m
arke
d li
ne
s.
Tak
ing
a m
eas
ure
me
nt:
No
tice
the
num
be
rs a
nd
m
ark
s at
the
en
d o
f th
e
ob
ject
.
Estim
ate
the
fin
al d
igit
b
etw
ee
n th
e m
arke
d li
ne
s.
Sig
nif
ican
t fig
ure
s:th
e n
umb
er
of d
igit
s in
a m
eas
ure
d n
umb
er
incl
udin
g th
e e
stim
ate
d d
igit
.43
.026
g
0.00
2650
m
1044
000
L
1044
000
LW
he
n o
ne
or
mo
re z
ero
s at
the
en
d o
f a
larg
e n
umb
er
are
sig
nif
ican
t, us
e
scie
nti
fic
no
tati
on
.In
our
bo
ok
, th
ere
may
be
a d
eci
mal
at
the
en
d o
f a n
umb
er
if th
e z
ero
s ar
e
sig
nif
ican
t.
0.00
04 s
Zero
s at
the
be
gin
nin
g o
f a d
eci
mal
nu
mb
er
are
use
d a
s p
lace
ho
lde
rs
and
are
not
sig
nif
ican
t.
7.90
x 1
0-7
0090
45.7
00
Exa
ct n
um
ber
s:N
umb
ers
ob
tain
ed
by
coun
tin
g it
em
s3
bun
nie
s$1
4.22
7 co
ins
Num
be
rs o
bta
ine
d b
y us
ing
a d
efi
nit
ion
that
co
mp
are
s tw
o u
nit
s in
th
e s
ame
me
asur
ing
sys
tem
.1
L =
100
0 m
L1
ft=
12
in
Sig
nif
ican
t num
be
rs d
o n
ot a
pp
ly!
Exa
ct n
umb
ers
do
no
t aff
ect
the
num
be
r o
f sig
nif
ican
t fi
gur
es
in a
cal
cula
tio
n (
see
se
ctio
n 2
.3)
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Ad
just
cal
cula
ted
num
be
rs to
giv
e th
e c
orr
ect
num
be
r o
f si
gn
ific
ant f
igur
es
If th
e fi
rst d
igit
to b
e d
rop
pe
d is
4 o
r le
ss, r
oun
d d
own
3.4
If th
e fi
rst d
igit
to b
e d
rop
pe
d is
5 o
r m
ore,
roun
d u
p3.
6
In m
ulti
pli
cati
on
an
d d
ivis
ion
, th
e fi
nal
an
swe
r is
wri
tte
n s
o th
at it
has
th
e s
ame
num
be
r o
f sig
nif
ican
t fig
ure
(SF
s) a
s th
e m
eas
ure
me
nt w
ith
th
e fe
we
st S
Fs.
7.2
* 1.
33
(2.0
75 *
0.5
85)
8.42
In a
dd
itio
n a
nd
sub
trac
tio
n, t
he
fin
al a
nsw
er
is w
ritt
en
so
that
it h
a th
e
sam
e n
umb
er
of d
eci
mal
pla
ces
as th
e m
eas
ure
me
nt h
avin
g th
e
few
est
de
cim
al p
lace
s.
2.04
5+
34.
110
4.45
0.
838
+ 4
6
25.0
÷5.
0 =
5
(27.1+2.33) 2.112
In a
dd
itio
n/s
ubtr
acti
on
AN
D d
ivis
ion
/mul
tip
lica
tio
n a
re p
rese
nt,
foll
ow o
rde
r o
f op
era
tio
ns.
Pare
nth
ese
s fi
rst –
foll
ow r
ule
s p
ert
ain
ing
to th
at c
alcu
lati
on
.M
ake
a n
ote
of “
corr
ect
SFs
” b
ut k
ee
p th
e e
nti
re n
umb
er
for
use
in fi
nal
ca
lcul
atio
n.
Perf
orm
div
isio
n/m
ulti
pli
cati
on
–fo
llow
tho
se r
ule
s us
ing
the
“cor
rect
” nu
mb
er fr
om th
e fir
st s
tep
(16.
22 +
7.1
33)
* 0.
661
Mu
ltip
lica
tion
/Div
isio
n –
few
est
num
be
r o
f SFs
in o
rig
inal
num
be
rs
= S
Fs in
an
swe
r
Add
itio
n/S
ub
trac
tion
–fe
we
st d
eci
mal
pla
ce in
ori
gin
al n
umb
ers
=
num
be
r o
f de
cim
al p
lace
s in
an
swe
r
Mu
ltip
lica
tion
/Div
isio
n A
ND
Add
itio
n/S
ub
trac
tion
Fo
llow
ord
er
of o
pe
rati
on
s (o
r p
are
nth
ese
s)A
pp
ly r
ule
for
op
era
tio
n d
on
e in
par
en
the
ses
Use
full
num
be
r o
n c
alcu
lato
r in
nex
t cal
cula
tio
n
Do
fin
al c
alcu
lati
on
Ap
ply
rul
e fo
r fi
nal
op
era
tio
n.
11.1
1 -
2.5
-7.
000
= 1
.610
0000
00
72.1
1 ÷
1.1
= 6
5.55
4545
45
(14.
1 +
21.
12)
* 5.
00 =
176
.100
0000
(1.5+73) 2.14
=34.8130
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Use
num
eri
cal v
alue
s as
pre
fixe
s to
wri
te a
me
tric
eq
uali
ty.
A s
pe
cial
feat
ure
of t
he
SI a
nd
me
tric
sys
tem
s is
that
a p
refi
x m
ay b
e p
lace
din
fro
nt o
f any
un
it to
incr
eas
e o
r d
ecr
eas
e it
s si
ze b
y so
me
fa
cto
r o
f te
n.
For
exam
ple
, th
e p
refi
xes
mill
ian
d m
icro
are
use
d to
mak
e s
mal
ler
unit
s.
mil
lig
ram
(m
g)
mic
rog
ram
(μ
g o
r m
cg)
Pre
fixe
s ca
n b
e a
pp
lie
d to
gra
ms,
m
ete
rs, l
ite
rs, a
nd
mo
re
Pre
fixe
s ca
n b
e a
pp
lie
d to
gra
ms,
m
ete
rs, l
ite
rs, a
nd
mo
re
Op
hth
alm
olo
gis
t me
asur
e th
e d
iam
ete
r o
f th
e e
ye’s
re
tin
a in
ce
nti
me
ters
(cm
), w
hil
e a
sur
ge
on
me
asur
e th
e le
ng
th o
f a
ne
rve
in m
illi
me
ters
(m
m).
Eac
h o
f th
e fo
llow
ing
eq
ual
itie
sd
esc
rib
es
the
sam
e le
ng
th
in a
dif
fere
nt u
nit
:1
m =
10
dm
1 m
= 1
00 c
m
1 m
= 1
000
mm
Eq
ual
itie
s: c
om
par
iso
ns
that
sh
ow
the
re
lati
on
ship
be
twe
en
two
un
its.
Wh
en
yo
u vi
sit t
he
do
cto
r, h
e o
r sh
e r
eco
rds
your
mas
s in
k
ilo
gra
ms
(kg
) an
d la
bo
rato
ry r
esu
lts
oft
en
in m
icro
gra
ms
(μg
or
mcg
).
1000
g =
1 k
g
1 g
=
100
0 m
g
1 g
=
100
cg
Th
e c
ub
ic c
enti
met
er
(ab
bre
viat
ed
as
cm3
or
cc)
is th
e
volu
me
of a
cub
e w
ho
se
dim
en
sio
ns
are
1 c
m o
n e
ach
si
de.
A c
ubic
ce
nti
me
ter
has
the
sam
e
volu
me
as
a m
illi
lite
r, an
d th
e
unit
s ar
e o
fte
n u
sed
in
terc
han
ge
ably
.
1 cm
3=
1 c
c =
1 m
L
and
1000
cm
3=
100
0 m
L =
1 L
Ide
nti
fy th
e la
rge
r un
it:
mm
or
cm
Ide
nti
fy th
e la
rge
r un
it:
kil
og
ram
or
cen
tig
ram
Ide
nti
fy th
e la
rge
r un
it:
kL
or μL
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Wri
te a
con
vers
ion
fact
orfo
r tw
o u
nit
s th
at d
esc
rib
e th
e s
ame
qua
nti
ty.
Eq
ual
itie
s: u
se tw
o d
iffe
ren
t un
its
to
de
scri
be
the
sam
e m
eas
ure
d a
mo
unt!
1 m
=
100
0 m
m (
103
mm
)
1 lb
= 1
6 o
z
2.20
lb=
1 k
g
Man
y p
rob
lem
s in
ch
em
istr
y an
d th
e h
eal
th s
cie
nce
s re
qui
re y
ou
to
chan
ge
fro
m o
ne
un
it to
an
oth
er
unit
.
You
do
this
eve
ryd
ay…
For
exam
ple
: sup
po
se y
ou
wo
rke
d 2
ho
urs
on
yo
ur h
om
ewo
rk. A
fr
ien
d a
ske
d h
ow m
any
min
ute
s yo
u w
ork
ed
. Yo
u sa
y “1
20 m
inut
es.
”
Wh
en
yo
u ex
pre
sse
d 2
hr
as 1
20 m
ins,
yo
u d
id n
ot c
han
ge
the
am
oun
t of t
ime
yo
u sp
en
t stu
dyi
ng
. You
ch
ange
d w
hic
h u
nit
you
use
d to
des
crib
e it
.
Any
eq
uali
ty c
an b
e w
ritt
en
as
frac
tio
ns
call
ed
co
nve
rsio
n fa
ctor
sw
ith
on
e o
f th
e q
uan
titi
es
in th
e
num
era
tor
and
the
oth
er
qua
nti
ty in
the
de
no
min
ato
r.
Eq
uali
ty:
1 h
our
= 6
0 m
inut
es
Eq
uali
ty:
100
cm =
1 m
Be
sur
e to
incl
ude
un
its!
Tw
o c
onv
ers
ion
fac
tors
are
al
way
s p
oss
ible
for
any
eq
uali
ty.
Th
e n
umb
ers
in:
•an
y e
qua
lity
bet
wee
n tw
o m
etri
c u
nit
s O
R
bet
wee
n tw
o U.
S. s
yste
m u
nit
s ar
e o
bta
ine
d b
y d
efi
nit
ion
an
d a
re, t
he
refo
re, e
xact
num
be
rs.
•a
def
init
ion
are
exa
ct a
nd
are
no
t use
d to
d
ete
rmin
e s
ign
ific
ant f
igur
es.
•an
eq
uali
ty b
etw
een
met
ric
and
U.S
. un
its
con
tain
on
e n
umb
er
ob
tain
ed
by
me
asur
em
en
t an
d c
oun
t tow
ard
the
sig
nif
ican
t fig
ure
s.
Exc
epti
on:T
he
eq
uali
ty 1
in. =
2.5
4 cm
has
be
en
d
efi
ne
d a
s an
exa
ct r
ela
tio
nsh
ip. T
he
refo
re, 2
.54
is
an e
xact
num
be
r.
Wri
te th
e c
onv
ers
ion
fact
ors
fro
m th
e e
qua
liti
es:
lite
rs a
nd
mil
lili
ters
me
ters
an
d in
che
s (1
m =
39.
4 in
)
me
ters
an
d k
ilo
me
ters
An
equa
lity
may
als
o b
e st
ated
with
in a
pro
blem
that
ap
plie
s on
ly to
that
pro
blem
.
Th
e c
ar w
as tr
ave
lin
g a
t a s
pe
ed
of 8
5 k
m/h
.
On
e ta
ble
t co
nta
ins
500
mg
of v
itam
in C
.
Equa
litie
s st
ated
with
in d
osag
e p
rob
lem
s fo
r m
edic
atio
n ca
n al
so b
e w
ritte
n as
con
vers
ion
fact
ors.
Ke
flex
(C
ep
hal
exin
), a
n a
nti
bio
tic
use
d fo
r re
spir
ato
ry a
nd
ear
infe
ctio
ns,
is a
vail
able
in 2
50-m
g
cap
sule
s.
A p
erc
en
tag
e (
%)
is w
ritt
en
as
a co
nve
rsio
n fa
cto
r b
y ch
oo
sin
g a
un
it
and
exp
ress
ing
the
num
eri
cal r
ela
tio
nsh
ip o
f th
e p
arts
of t
his
un
it to
100
p
arts
of t
he
wh
ole
.
A p
ers
on
mig
ht h
ave
18%
bo
dy
fat b
y m
ass.
To in
dic
ate
ve
ry s
mal
l rat
ios,
we
use
par
ts p
er
mil
lio
n (
pp
m)
and
par
ts p
er
bil
lio
n
(pp
b).
Wri
te th
e e
qua
lity
an
d it
s co
rre
spo
nd
ing
co
nve
rsio
n fa
cto
rs.
Salm
on
co
nta
ins
1.9%
om
eg
a-3
fatt
y ac
ids
by
mas
s.
Wri
te th
e e
qua
lity
an
d it
s co
rre
spo
nd
ing
co
nve
rsio
n fa
cto
rs.
Me
ters
an
d c
en
tim
ete
rs (
len
gth
)
Wri
te th
e e
qua
lity
an
d it
s co
rre
spo
nd
ing
co
nve
rsio
n fa
cto
rs.
Jew
elr
y th
at c
on
tain
s 18
% g
old
(p
erc
en
tag
e)
Wri
te th
e e
qua
lity
an
d it
s co
rre
spo
nd
ing
co
nve
rsio
n fa
cto
rs.
On
e g
allo
n o
f gas
is $
3.40
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Use
co
nve
rsio
n fa
cto
rs to
ch
ang
e fr
om
on
e u
nit
to a
no
the
r.
Th
e p
roce
ss o
f pro
ble
m s
olv
ing
in c
he
mis
try
oft
en
re
qui
res
on
e o
r m
ore
co
nve
rsio
n fa
cto
rs to
ch
ang
e a
giv
en
un
it to
the
n
ee
de
d u
nit
.
Pro
ble
m s
olv
ing
in c
he
mis
try
req
uire
s:
Ste
p 1
:Sta
teth
eg
ive
nan
dn
ee
de
dq
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e g
ive
n u
nit
to th
e n
ee
de
d u
nit
.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel u
nit
s an
d c
alcu
late
the
an
swe
r.
If a
pe
rso
n w
eig
hts
164
lb, w
hat
is th
e b
od
y m
ass
in k
ilo
gra
ms?
(1
kg
= 2
.20
lb)
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
Ara
ttle
snak
eis
2.44
mlo
ng
.How
man
yce
nti
me
ters
lon
gis
the
snak
e?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
Th
e D
aily
Val
ue (
DV
) fo
r p
ho
sph
oru
s is
800
mg
. How
man
y g
ram
s o
f ph
osp
ho
rus
is th
at?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.T
he
“tr
ain
trac
ks”
me
tho
d o
f wri
tin
g c
an
he
lp k
ee
p p
rob
lem
so
lvin
g n
eat
.
Tw
oo
rm
ore
conv
ers
ion
fact
ors
are
oft
en
ne
ed
ed
to
com
ple
te th
e c
han
ge
of u
nit
s.
Inse
ttin
gup
the
sep
rob
lem
s,o
ne
fact
or
foll
ows
the
o
the
r.
Eac
hfa
cto
ris
arra
ng
ed
toca
nce
lth
ep
roce
ed
ing
unit
unti
lth
e n
ee
de
d u
nit
is o
bta
ine
d.
324ℎ 1
60 1ℎ60 1
=259200
How
man
y m
inut
es
are
in 1
.4 d
ays?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
A d
oct
or
pre
scri
be
d a
do
sag
e o
f 0.1
50 m
g o
f Syn
thro
id. I
f tab
lets
co
nta
in 7
5μg
of
Syn
thro
id, h
ow m
any
tab
lets
are
re
qui
red
?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
If y
our
pac
e o
n a
tre
adm
ill i
s 65
me
ters
pe
r m
inut
e, h
ow m
any
min
ute
s w
ill i
t tak
e y
ou
to w
alk
7.5
kil
om
ete
rs?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
Cal
cula
te th
e d
en
sity
of a
sub
stan
ce; u
se th
e d
en
sity
to c
alcu
late
the
mas
s o
r vo
lum
e o
f a s
ubst
ance
.
Ob
ject
s th
at s
ink
in
wat
er
are
mo
re
de
nse
than
wat
er;
o
bje
cts
that
flo
at
are
less
de
nse
.
Den
sity
co
mp
are
s th
e m
ass
of a
n o
bje
ct to
its
volu
me.
Wh
enyo
un
g,b
one
gro
ws
fast
erth
anit
deg
ener
ates
……
bu
t as
we
age,
gro
wth
slo
ws,
wh
ich
ca
n le
ad to
loss
of b
one
den
sity
.
To p
reve
nt o
steo
por
osis
, b
ones
nee
d c
alci
um
an
d v
itam
in D
. Als
o, i
ncr
easi
ng
mu
scle
st
ren
gth
incr
ease
s b
one
stre
ng
th.
Joh
n to
ok
2.0
teas
po
on
s (t
sp)
of c
oug
h s
yrup
. If t
he
syr
up h
ad a
de
nsi
ty o
f 1.2
0 g
/mL
and
the
re is
5.0
mL
in 1
tsp
, wh
at w
as th
e m
ass,
in g
ram
s, o
f th
e c
oug
h s
yrup
?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
An
un
kn
own
liq
uid
has
a d
en
sity
of 1
.32
g/m
L.W
hat
is th
e v
olu
me
(m
L) o
f a 1
4.7
g
sam
ple
of t
he
liq
uid
?
Ste
p 1
: Sta
te th
e g
ive
n a
nd
n
ee
de
d q
uan
titi
es
(un
its)
.
Ste
p 2
: Wri
te a
pla
n to
co
nve
rt th
e
giv
en
un
it to
the
ne
ed
ed
un
it.
Ste
p 3
: Sta
te th
e e
qua
liti
es
and
co
nve
rsio
n f
acto
rs
Ste
p 4
: Se
t up
the
pro
ble
m to
can
cel
unit
s an
d c
alcu
late
the
an
swe
r.
2.1
–U
nit
s o
f Me
asur
em
en
t
2.2
–M
eas
ure
d N
umb
ers
an
d S
ign
ific
ant F
igur
es
2.3
–Si
gn
ific
ant F
igur
es
and
Cal
cula
tio
ns
2.4
–P
refi
xes
and
Eq
uali
tie
s
2.5
–W
riti
ng
Co
nve
rsio
n F
acto
rs
2.6
–P
rob
lem
So
lvin
g u
sin
g U
nit
Co
nve
rsio
n
2.7
–D
en
sity
