Wednesday, December 16, 2009

Dividing Fractions

To Divide fractions all you have to do is the three simple steps:

1. You multiply the first fraction by the reciprocal of the second fraction. A reciprocal is when you flip the other fraction around.

2. Then you multiply the numerators and the denominators as if it were a multiplication problem.

3. Finally you simplify the fraction. If it can be.

An example of this would be,

4/5 / 1/2 = 4/5 x 2/1 = 8/5 = 1 3/5
flip the Simplify
fraction
around

Thursday, December 10, 2009

daily scribe

terminating decimals- a decimal that ends or terminates.
example: 0.5, 0.84, 1.03.

repeating decimals- a decimal that ends with a repeated digit or block of digits.
_ _ _
example: 0.333, 0.1212, 0.777
you only put the line (-) to show that its a repeating decimal.


writing a repeating decimal as a fraction!
1. identify how many digits repeat.
2.place the repeating digits over the same number of 9's.
3. simplify.


when you do on a calculator 6 divided by 9 ( that is because where do the fraction 6\9) on the calculator screen only 10 digits come up. so when you do that it should come up as 0.6666666667. so as you can see there is a 7 at the end, if it could hold more than 10 digits then the number 6 would go on for ETERNITY'S so 7 comes up because the calculator automatically knows to round it up.

Repeating Decimals & Fractions

Monday, December 7, 2009

The class of 12/7/09

Today we learned the least common denominator which is the same thing as LCM. We practiced these methods but with 3 numbers. We used the ladder method to find the LCM. We also worked with fractions today by taking the LCM and putting it into a fraction.