Dividing Decimals

Dividing Decimals Movie Clip 1

Dividing Decimals Movie Clip 2

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Steps to Dividing Decimals

1. Write out the problem

2. Move the Decimals (To make the divisor a whole number)

     TO THE RIGHT

     TO THE RIGHT

     AND THEN UP

3. Divide 

4. If you have a remainder, keep adding zeros until you don't have a remainder anymore or it is repeating

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NO decimal in the divisor, just move the decimal up.


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If you have to move the decimal two places, but there are no more numbers, add a zero.

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You keep getting a remainder of one, so you keep adding zeros...... but you keep getting one, so you know it is a repeating decimal of three.


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Another example of repeating decimals.



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DIVIDING DECIMALS SONG
http://www.youtube.com/watch?v=QUK81Wygmg4

Multiply Decimals

Multiply Decimals Movie Clip

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Adding and Subtracting Decimals

Adding Decimals Movie Clip

Subtracting Decimals Move Clip

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Dividing Mixed Numbers

Dividing Mixed Numbers Movie Clip       

Dividing a mixed number

            by a mixed Number

  1.   Convert Mixed Numbers to Improper

  
2.   Leave the first number alone, 
      Change to multiplication, 
      Reciprocal of the second number

  
3.   Multiply

  4.   Simplify/Convert 

Math Tutorial---- http://www.youtube.com/watch?v=uMTqaEbXQ6k

Dividing Fractions

Reciprocal
To get the reciprocal of a number, just divide 1 by the number Example: the reciprocal of 2 is 1/2 (half) Every number has a reciprocal except 0 (1/0 is undefined) If you multiply a number by its reciprocal you get 1 Example: 3 times 1/3 equals 1 Also called the "Multiplicative Inverse"

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Dividing Fractions  To divide a number by a fraction, multiply the number by the reciprocal of the fraction.

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Multiply Mixed Numbers by Mixed Numbers

Converting a Mixed Number to an Improper Fraction and Improper Fraction to Mixed

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Converting a Mixed Number to an Improper Fraction

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Converting an Improper Fraction to a Mixed Number

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Multiply Fractions by Fractions

Steps

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**If you have a whole number, place a one under the whole number

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**Shortcut when you have the same number as a numerator and a denominator cross cancel


http://www.mathsisfun.com/fractions_multiplication.html

Adding and Subtracting Fractions

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Butterfly Method

Math Game

Practice Order of Operations, Fractions, Exponents, Etc. 

http://www.mydearauntsally.com/play/

LCM- Least Common Multiple

LCM = 7 x 2 x 2 x 2 x 5 = 280

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LCM = 2 x 2 x 2 x 2 x 2 x 2 x 5 = 320

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LCM = 3 x 2 x 3 x 2 x 2 = 72

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LCM Steps      

• Prime Factor Trees
• Write out all Prime Factors
• Write all of the same factors in the middle
• Leftover factors write on  each side
• LCM = Multiply ALL numbers in ALL of the circles together