LP5­ fraction reps.notebook

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September 21, 2015

Warm Up: Write as a mixed number:

Write as an improper fraction:

LP5­ fraction reps.notebook

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September 21, 2015

LP5­ fraction reps.notebook

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September 21, 2015

Comparing Fractions

equivalent fractions­

Rewrite with a denominator of 15.

Example:

Try it out:

Try another:

LP5­ fraction reps.notebook

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September 21, 2015

More

Examples:

LP5­ fraction reps.notebook

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September 21, 2015

reducing to

 

lowest term

s:What does lowest terms mean?

Method 1: Find any common factor & continue to divide until

it is in lowest terms

Method 2: Find the greatest common factor (GCF) & divide

once to get lowest terms

ExampleExample

LP5­ fraction reps.notebook

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September 21, 2015

Write each of the following in lowest terms:

In roof construction, the pitch, or steepness of the roof is defined as the fraction pitch=rise/run (slope).  If the rise is 8 feet and the run is 24 feet, what is the pitch?

Calculate the pitch of a storage shed with a rise of 6 ft and a run of 36 ft.

LP5­ fraction reps.notebook

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September 21, 2015

Comparing Fractions...

1) Find a common denominator2) Compare the numerators

LP5­ fraction reps.notebook

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September 21, 2015

A 5/8 inch drill bit is too small for a job and a 3/4 inch drill bit is too large.  What size drill be should be tried next?

If a 3/8 inch drill bit is too small for a job, and a 1/2 inch drill bit is too large for a job, what size should be tried next?

Circle the larger quantity in each example below:

LP5­ fraction reps.notebook

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September 21, 2015

Why might you choose to leave a fraction unreduced?

Homework: pg. 74­75 D) 4­6, E)5­7, F) 4­5d) Complete.

4) 5) 6)

e) Which is larger?

6) 7) 8)

f) Practical Problems.

4) Sheet Metal Trades. Which is thicker, a -in.

sheet of metal or a -in. fastener?

5) Plumbing. Is it possible to have a -in pipe

with an inside diameter of -in.?

LP5­ fraction reps.notebook

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September 21, 2015

Exit Card

Grade:«grade»Subject:«subject»

Date:«date»

LP5­ fraction reps.notebook

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September 21, 2015

1 Why might you choose to leave a fraction unreduced?