Today: Review Khan Topics Review for Tests Complete Classwork 3.2 (Collaborate, Ask)

January 25, 2016

Fractions/Decimals & Percent Unit Simplifying Fractions & Terms

GCF (by using prime factorization) Factoring

+, -, *, ÷ Fractions

Proportions, Ratios, Rates Unit Rates

Converting Between Fractions, Decimals & Percent % Problems: Solving for the part, whole

and percent Percent change Percent mark-up/mark-down

Test # 1

Test # 2

Test # 3

>Tomorrow

The Week Ahead

Warm-Up

Note Test & CW Dates

In Your Grade Trackers

Tomorrow:

Review Part I for Test #1Proportions are defined as two equal ratiosDetermine whether the following ratios are

proportional:

1421,

23

1716,

98

26

35

x

Solve the proportion.

(Please wait before answering)

Is an exact number needed to answer

the question?

Let's compare

these ratios..

The numerator determines the 'winner'The answer is 'no', because this, is larger

than this

Review Part I for Test #1Jay, Kay, and Elle put their money together to

buy lottery tickets. Jay contributed $6.00, Kay $10.00, and Elle $4.00.They agreed that if they won the $120,000

jackpot, they would split the winnings in the same ratio as their contributions.How much richer will each be if they

win?

One hundred students were surveyed. Ten percent said they walked to and from school. If 250 students are surveyed, what % of students would we expect to be walkers?

J = $36,000 K = $60,000 L = $24,000

100 students is a large enough sample size to represent the entire school, so our answer is...

Review Part I for Test #1

Find the length of side x

102

x15

The answer is...

I don't know, and neither do you

The answer cannot be determined because the

shapes are not similar. That is, they are not different sizes of the same shape.

Review Part I for Test #1The final question for this section involves

proportions.Whether we are aware of it or not, proportions play a large role in our understanding of what is 'normal' and what is not.This includes our understanding of what a human being should look like.

Da Vinci's sketch was all about his investigation into proportions and the human body.

Review Part I for Test #1

Does this person look 'normal' to you?

No, and not because his whole head is smaller than it actually is, but because he dosen't meet our definition of 'normal' proportions.

Generally speaking, homo sapien proportions are:

Yes, because you know that even though her face in the photo is smaller than her real face, everything is smaller, and thus proportional.What defines 'normal' is the relationship between the different parts of her face.What about him? 'Normal'?

Eight equal parts

Seven equal partsWith these

proportions, we would expect a 6

ft. tall man to have knees ≈ how many inches off

the ground?

Each part is equal to the size of........

(72 ÷ 8)•2 = or,(72 •)•2 = or,(72 •) = or,Solving by proportions: = = 18

Review Parts II & III

Convert the following to an equivalent fraction:% 10% 820%

Change into a percent.

The nutrition label states that a Big Mac has 1010 mg.(!!) of sodium (salt) which is 42% of the recommended daily intake. What is the (maximum) recommeded daily value of salt intake (mg)? The government also recommends no more than 70 total grams of fat be eaten in a day. How many grams of fat does a Big Mac have?