Wednesday, January 18th
1. Write homework in your planner
- Worksheet- Relate Dec to %
- Time test packet due Friday
2. Today, you will need:
- Folder
- Notebook
- Homework(wkst fract & dec)
PASS BACK
FRACTION TESTS and
check foldersNO GRADED PAPERS!!
What is "percent"?
Percent means "out of 100."
%
We can use the percent symbol (%) as a
handy way to write a fraction with a common
denominator of 100.
For example, instead of saying "8 out of
every 100 professional basketball players are
female," we can say "8% of professional
basketball players are female."
Renaming decimals as percents...
Write 0.38 as a percent
1
Write 38 hundredths as
a fraction
2
Write the fraction as
a percent
38
0.38 =
100
38
= 38%
100
Write 1.45 as a percent
1
Write 1 and 45 hundredths
as a mixed number
2
Write the mixed number
as an improper fraction
3
Write the fraction as
a percent
45
1.45 = 1
100
45 = 145
1 100 100
145
= 145%
100
Change your decimal to a percent by
multiplying by 100.
.10 *100=10%
Notice my hundredths fraction is the
same as my percent.
Rename the decimals as percents...
Erase inside the
circle to check.
0.22 =
22%
0.5 =
50%
1.75 =
175%
Real-World Application
A batting average is the ratio of hits to at bats. Batting averages are
expressed as a decimal rounded to the nearest thousandth. The table
shows the top four batting averages for the Bullard Panther baseball
team last season. Express the batting averages as a percent.
Ryan
Batting Averages
Player
Average
Gerald
Ryan
0.350
35%
Gerald
0.330
33%
Alex
0.300
30%
Jeremy
0.250
25%
Click
Click here
here
for
for the
the
answer
answer
Click
Click here
here
for
for the
the
answer
answer
Alex
Click
Click here
here
for
for the
the
answer
answer
Click
Click here
here
for
for the
the
answer
answer
Jeremy
Renaming percents as decimals...
Write 56% as a decimal.
Rewrite the percent as a fraction
with a denominator of 100
56
56% = 100
Write fifty-six hundredths
as a decimal
= 0.56
Write 8% as a decimal.
Rewrite the percent as a fraction
with a denominator of 100
8
100
8% =
Write eight hundredths as a
decimal
= 0.08
Write 120% as a decimal.
Rewrite the percent as a fraction
with a denominator of 100
120% =
120
100
Write the improper fraction
as a mixed number
=1
Write 1 and 20 hundredths
as a decimal
= 1.20 or 1.2
20
100
Rename the percents as decimals...
Drag the percent to the bottom of the white box to check your answers.
17% =
104% =
2% =
0.17
0.02
1.04
Remember that percent is just another
way of showing part of the whole.
100% is always the whole.
So for example- 75% said that they had
read a book in the last month. That
means that 25% had not read a book in
the last month. Remember 100 is the
whole. So, 100 - 75 = 25%.
Together 75 and 25 = 100.
Figure this one. If 80% of the people went
to a movie in the last month, what percent
did not go to a movie in the last month?
Yes, your right! 20%
Pull
And what if 70% of people ate breakfast,
what percent did not eat breakfast?
100%-70%= 30%
Pull
Select two tiles to reveal a decimal or percent.
If the two numbers revealed are the same color, they are
equivalent and remain revealed. If the two numbers
are not a match, click the tiles to hide them.
Continue until all pairs are revealed.
Can you find all six pairs before time runs out?
Decimals & Percents
1.2
0.88 25% 0.04
0.25 0.4
88% 120%
0.8
4%
40%
80%