Calculate with Confidence (Units 1,2) Test bank

Calculate
with
Confidence
(Units
1,2)
Things
to
remember
-
ANS-always
reduce
to
lowest
terms
-add:
must
have
same
denominator,
then
add
numerators
-subtract:
must
have
same
denominator,
then
subtract
numerator
-multiply:
multiply
numerators
and
denominators
-divide:
invert
the
second
fraction
and
multiply
A
child's
oral
Motrin
suspension
contains
100
mg
per
teaspoonful.
20
mg
represents
what
part
of
a
dosage?
-
ANS1/5
of
a
dosage
What
do
you
do
if
the
number
is
less
than
1?
-
ANSPut
a
0
in
front
of
it
Ex.
0.45
-omitting
a
0
before
decimal
will
always
be
wrong
on
tests
What
should
you
do
with
the
0
at
the
end
of
a
number?
-
ANS-Omit
it
(764.40
should
be
764.4
or
it
will
be
WRONG
on
tests)
How
do
you
convert
within
the
Metric
system?
-
ANS-when
multiplying
by
10,
100
or
1000,
make
sure
to
move
the
decimal
point
to
the
right
the
same
number
of
places
as
there
are
zeros
in
the
number
by
which
you
are
multiplying
-when
dividing,
move
decimal
point
to
the
left
What
is
a
proportion?
-
ANSan
equation
of
two
ratios
of
equal
value
-the
terms
in
a
proportion
are
the
means
and
extremes
-the
product
of
the
means
equals
the
product
of
the
extremes
Ex.
5:25
=
10:50
5
x
50
=250
25
x
10
=
250
How
are
IVs
and
medications
in
solutions
and
ointments
prescribed?
-
ANSIn
percentage
strength
-to
change
a
percent
to
a
fraction,
drop
the
percent
sign,
place
the
number
over
100
and
reduce
to
lowest
terms
Ex.
0.9%
normal
saline
becomes
9/1000
normal
saline
when
expressed
as
a
fraction
Changing
a
percentage
to
a
decimal
-
ANSDrop
the
percent
sign
and
move
the
decimal
point
two
places
to
the
left
(add
zeros
as
needed).
25%
=
0.25
Changing
a
percentage
to
a
ratio
-
ANSChange
it
to
a
fraction,
reduce
to
the
lowest
terms,
place
the
numerator
as
the
first
term
of
the
ratio
and
the
denominator
as
the
second
term
10%
=
10/100
=
1/10
=
1:10