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# Review PowerPoint PPT Presentation

Review. Complex fractions are fractions that have fractions within them. They are either in the numerator , the denominator, or both . Divide complex fractions by multiplying (keep, change, change). Change Operation. Flip 2nd Fraction. Dividing Fractions Review.

Review

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## Review

• Complex fractions are fractions that have fractions within them. They are either in the numerator, the denominator, or both.

• Divide complex fractions by multiplying (keep, change, change)

Change Operation.

Flip 2nd Fraction.

### Dividing Fractions Review

• When dividing fractions, they do NOT need to have a common denominator.

• To divide two fractions, change the operation to multiply and take the reciprocal of the second fraction (flip the second fraction). Keep-Change-Change.

• Suppose a car travels 10 ¾ miles in 1/4 an hour. Determine the unit rate:

A. 23mph

B. 11mph

C. 43mph

D. 55mph

43 mph

CommissionA sales person receives a commission of of her sales. What would the sales commission for the month be if she sold \$20,000.

• Hint #1: Commission = rate total sales amount

• Hint #2: Of means multiply in math

A. \$80

Commission =

B. \$800

C. \$100

D. \$750

Discounts:

A retail clothing store is having a sale on shoes. All shoes are off of the original price. How much would a pair of shoes cost that were originally \$80?

• Hint: Discount price = original price – rate original price OR(1 - rate) original price

A. \$64

Method one:

B. \$16

Method two:

C. \$75

D. \$96

Markups

A family bought their house for \$80,000. Ten years later they remodeled it and marked it up by of the price they paid. What is the new price of the house?

• Hint: Markup price = original price + rate original price OR(1 + rate) original price

A. \$10,000

Method one:

B. \$88,000

C. \$90,000

D. \$95,000

• A group of 6 hikers are preparing for a one-week trip. All of the group’s supplies will be carried by the hikers in backpacks. The leader decided that it would be fair for each hiker to carry a backpack that is the same fraction of his weight as all the other hiker’s. In this set-up, the heaviest hiker would carry the heaviest load. The table below shows the weight of each hiker and the weight of his/her backpack.

On the next slide you will complete the table by finding the missing amounts of weight by applying the same ratio as the first 2 rows.

Hint: There are 16oz in 1 lb.

A. 166

B. 178

C. 166

D. 178

A. 117

B. 117

C. 13

D. 118

A. 11

B. 12

C. 10

D. 12

= Backpack weight

= Hiker’s weight

H

H

A. 105

B. 112

C. 105

D. 102

105

115

Skills Check!

When you finish turn your paper over and put it in the corner of your desk. Then silent read, work on something from another class, or work on the coordinate plane activity

No talking.

Don’t forget to watch the homework videos!