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Adding, Subtracting, Multiplying, and Dividing Fractions. By: Mr. Menjivar. 09/02/11. 09/02/11. Observe, Question, Comment . Add, Subtract, Multiply, and Divide Fractions. Add, Subtract, Multiply, and Divide Fractions Reflection. Warm-Up:. 8 L. 8 R. Warm-Up.

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Presentation Transcript
slide2

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

8L

8R

warm up
Warm-Up

Change the Improper Fraction to Mixed Number

#1) #2)

Change the Mixed Number to Improper Fraction

#3) #4)

slide4

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

8L

8R

standard
Standard
  • Number Sense 2.2:Add and subtract fractions by using factoring to find common denominators.
  • Number Sense 1.2:Add, subtract, multiply, and divide rational numbers (fractions).
slide6

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

8L

8R

objective
Objective
  • To add and subtract fractions
  • To multiply and divide fractions
slide8

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

Vocabulary

8L

8R

fraction
Fraction
  • Your Definition:
  • Are numbers expressed as the ratio of two numbers
numerator
Numerator
  • Your Definition:
  • Tells the desired outcome
denominator
Denominator
  • Your Definition:
  • Tells you how many things are there in total
improper fraction
Improper Fraction
  • Your Definition:
  • They’re fractions where the numerator is bigger than the denominator.
slide13

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

Vocabulary

Notes/Examples

8L

8R

fractions
Fractions

There are a few “special” fractions

How do you write 7 as a fraction?

7

1

How do you write 1 as a fraction?

3 101

3 101

How do you write 0 as a fraction?

0 0

5 100

let s apply them
Let’s apply them… :-)
  • (Use GCF if lost…)
slide17

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

Classwork #1

Vocabulary

Notes/Examples

8L

8R

try these on your own
Try these on your own =)

1.) 4.)

2.) 5.)

3.)

slide19

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

Classwork #1

Vocabulary

Notes/Examples

Back To The NOTES!!!!!!!!!!!!!

8L

8R

what if the denominators are different
What if the denominators are different?
  • Step 1: Get a Common Denominator
what if the denominators are different1
What if the denominators are different?
  • Step 2: Make the denominators the same
what if the denominators are different2
What if the denominators are different?
  • Step 3: Change numerators accordingly
what if the denominators are different3
What if the denominators are different?
  • Step 4: Perform necessary operation
word problem
Word Problem
  • Suppose one day you rode a bicycle for hours and jogged for hours. How many hours did you exercise?
brainpop
BrainPop
  • Adding and Subtracting
slide29

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

Classwork #1

Classwork #2

Vocabulary

Notes/Examples

8L

8R

slide31

09/02/11

09/02/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Objective

Classwork #1

Classwork #2

Vocabulary

Homework

Notes/Examples

8L

8R

homework
Homework
  • Pg. 313 [1-6 all and 13-16 all]
  • Pg. 314 [1-11 all]
multiplying fractions
Multiplying Fractions

All you do is multiply straight across!

dividing fractions
Dividing Fractions

Dividing is just like multiplying…

EXCEPT!!!

You are going to multiply the first fraction by the reciprocal of the second fraction.

dividing fractions1
Dividing Fractions

What is a reciprocal?

It is the flipped version of a fraction.

The reciprocal of

4 5

5 4

slide44

09/01/11

09/01/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Classwork

Objective

Vocabulary

Notes/Examples

8L

8R

slide46

09/01/11

09/01/11

Observe,

Question,

Comment

Add, Subtract, Multiply, and Divide

Fractions

Add, Subtract, Multiply, and

Divide Fractions Reflection

Warm-Up:

Standard

Classwork

Objective

Homework:

Vocabulary

Notes/Examples

8L

8R

homework1
Homework
  • Pg. 315 [1-8 all and 11-17 all and 21-23]
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