Wednesday, January 4 th

Wednesday, January 4th

• Get a new warm up template from the front

• Please write down the Homework

Warm UpSolve for x in each proportion

1. 2.1224 100

x 3 7

5 x

New Seating Chart

Corny Joke of the Day

Why did Columbus go to jail?

Because he double-crossed the ocean

EINSTEIN’S OF THE MONTH

Please hand in your goal sheet

MATH DISCUSSION

How do we convert decimals, fractions,

and percents?

Percents

%

%%

%%

%

%

%

%

%%%

%

%

What is a percent?A percent is a ratio…how many

times out of a hundered

45 %

= 45100

45 percent means 45 out of

100 possible times!

Percents to Fractions

Conversion 1

How can you turn a percent into a

fraction?

Percentages can be written as a fraction

by simply placing them over 100!

Write these percents as fractions. Be sure to simplify

1)30 %2)40 %3)12 %4)99 %5)101 %

3/102/53/2599/1001 1/100

Dude…That was

easy

Percents to Decimals

Conversion 2

Steps Since I can put all percents over a

hundred then all I need to do is write the equivalent decimal.

Move your decimal place over to the LEFT twice!20 % = 20

100= 0.20

You try…Percent to Decimal

6)12 %7)8 %8)75 %9)48 %10)120 %

0.120.080.750.481.20

Fractions to Percents

Conversion 3

Group DiscussionHow would you convert

each fraction to a percent?

Which fraction is easier to convert and why?

5/25 vs. 2/7

Setting it upSet up a ratio!!!

100xFraction

What percent is 5/40?

540

= P100

40 · P = 5 · 10040P = 50050040

= 12.5 %

100xFraction

Your turn…

11)4/10012)2/513)3/414)2/315)2 1/2

4 %40 %75 %66.6 %250 %

Decimals to Fractions

Conversion 4

StepsWhatever place value the fraction

ends in is your DENOMINATOR Make sure to simplify! From here you can go easily into

PERCENTS!!!!

Why is that?

0.43 = 10043

0.3 = 310 = P

100

10P = 30030010

P = 30 %

= 43 %

Complete Table Decimal Fraction Percent

.014/23

78%

SummaryWhen you make a decimal a percent

you can really move the decimal _______ places to the ___________.

When you make a fraction a percent you want to make an equivalent fraction that has a denominator of _____________________.

Percent MemoryIn your groups, play memory!

You must get a match of fraction to percent or decimal to percent