Converting Fractions To Percentages, Converting Decimals To Percentages, Plotting Numbers On A Number Line Worksheet Page 8
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PERCENTAGE (Chapter 14)
A pack of 52 playing cards has
10
CARDS
been shuffled. You can view the
whole pack by clicking on the icon.
Suppose the 25 cards shown are
dealt from the pack.
a
What percentage of the cards shown are:
i
ii
hearts
black
iii
picture cards
iv
spades?
If an ace is 1 and picture cards are higher than
b
10, what percentage of the cards shown are:
10 or higher
5 or lower
i
ii
higher than 5 and less than 10?
iii
c
In the full pack of cards, what percentage are:
i
red
ii
diamonds
iii
either spades or clubs?
C
CONVERTING PERCENTAGES
TO FRACTIONS
Percentages are easily converted into fractions. We first write the percentage as a fraction
with a denominator of 100, and then express the fraction in its lowest terms.
Self Tutor
Example 4
Convert to a fraction with
100
denominator
, then
Express as fractions in lowest terms:
write in simplest form.
70%
85%
a
b
70%
85%
a
b
70
85
=
=
100
100
70¥10
85¥5
=
=
100¥10
100¥5
7
17
=
=
10
20
EXERCISE 14C
1
Write as a fraction in lowest terms:
43%
37%
50%
30%
a
b
c
d
90%
20%
40%
25%
e
f
g
h
75%
95%
100%
3%
i
j
k
l
5%
44%
37%
80%
m
n
o
p
99%
21%
32%
15%
q
r
s
t
200%
350%
125%
800%
u
v
w
x
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