# Friday, January 5 th - PowerPoint PPT Presentation

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Friday, January 5 th. Please complete warm up Please have homework out (Finding percent worksheet) . Warm Up. 6% of what number is 4 70% of 30 is what number?. Corny Joke of the Day. What did the tree say to the math teacher? “Gee, I’m a tree”. What? Checkpoint #1 Similar figures

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Friday, January 5 th

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## Friday, January 5th

Warm Up

6% of what number is 4

70% of 30 is what number?

### Corny Joke of the Day

What did the tree say to the math teacher?

“Gee, I’m a tree”

What? Checkpoint #1

Similar figures

Indirect measurement

When? Monday, January 9th

• 28

• 30

• 1.7

• 4

• 10

• 20

Flashcards

Percent

Proportion rule

Percents

Decimals

And

Fractions

Memory

## Real Life Applications

There are 480 students in Sara’s school. If 70% of the students participate in the fundraising program, how many students participate in the fundraising program?

s

70

33,600

100s

___

___

_____

____

100

100

100

480

Now solve:

Let s represent the number of students who participate in the fundraising program.

=

The cross products are equal.

100 •s = 70 • 480

100s= 33,600

s is multiplied by 100.

Divide both sides of the equation by 100 to undo multiplication.

=

s = 336

Since 336 is close to your estimate of 375, 336 is a reasonable answer.

336 students participate in the fundraising program.

Tanner is 25% of the way through his exercises. If he has exercised for 20 minutes so far, how much longer does he have to work out?

is

%

25

20

__

___

___

__

m

100

100

of

25% of the exercises are completed, so 20 minutes is 25% of the total time needed.

=

Set up a proportion. The “of” part is what you have been asked to find.

=

The cross products are equal.

100 • 20= 25 •m

## Whiteboard Race

Groups of 5

### Classwork

Finish backside of worksheet