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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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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: 8L 8R
Warm-Up Change the Improper Fraction to Mixed Number #1) #2) Change the Mixed Number to Improper Fraction #3) #4)
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 • 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).
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 • To add and subtract fractions • To multiply and divide fractions
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 • Your Definition: • Are numbers expressed as the ratio of two numbers
Numerator • Your Definition: • Tells the desired outcome
Denominator • Your Definition: • Tells you how many things are there in total
Improper Fraction • Your Definition: • They’re fractions where the numerator is bigger than the denominator.
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 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… :-) • (Use GCF if lost…)
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 =) 1.) 4.) 2.) 5.) 3.)
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? • Step 1: Get a Common Denominator
What if the denominators are different? • Step 2: Make the denominators the same
What if the denominators are different? • Step 3: Change numerators accordingly
What if the denominators are different? • Step 4: Perform necessary operation
Word Problem • Suppose one day you rode a bicycle for hours and jogged for hours. How many hours did you exercise?
BrainPop • Adding and Subtracting
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
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 • Pg. 313 [1-6 all and 13-16 all] • Pg. 314 [1-11 all]
Multiplying Fractions All you do is multiply straight across!
Dividing Fractions Dividing is just like multiplying… EXCEPT!!! You are going to multiply the first fraction by the reciprocal of the second fraction.
Dividing Fractions What is a reciprocal? It is the flipped version of a fraction. The reciprocal of 4 5 5 4
BrainPop Multiplying and Dividing Fractions • Break Time!
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
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
Homework • Pg. 315 [1-8 all and 11-17 all and 21-23]