Showing posts with label Review. Show all posts
Showing posts with label Review. Show all posts

Monday, 28 January 2013

Mixed and Improper Fractions

Mixed fractions are numbers that have a whole and a fraction together. (Ex. 1¼, or 3½). Whereas improper fractions are fractions where the numerator is more than the denominator (Ex. 12/6, 7/2, 10/4) 

To convert a mixed number to an improper, you need to do these steps: 
(Let's say convert 4¼ to an improper fraction)
  •  First, you need to know that the whole would be something like 4/4. So the question is 4 wholes. 
  • Then multiply the wholes by the denominator, that will show you how many there will be. So 4 x 4 = 16. 
Then after you add whatever is left, which is ¼. ¼ + 16 = 17/4. 

_________________________________________________________________

And that is how you convert mixed fractions/numbers to improper fractions.

To convert an improper fraction to a mixed, you can do these steps: 
(The number is...18/4) 
  • Find out how many times the denominator would fit into the number (18), by dividing the numerator by the denominator. (4 wholes,= 16 pieces.)
  • Then, after dividing it. You will see a decimal point after, which means what is left. (Which is 2 in this...) which equals 2/4.
  • Then add the whole and the fraction together. (4+2/4 = 4 2/4) 
  • If, the number ends up being something like 4 2/4, then you have to turn it into lowest terms. With even numbers you just divide it by 2 then continue till you get to lowest terms. (4 1/2 is lowest terms by the way.)


________________________________________________________
Apples,
           Janette Inocencio of 7-72

Sunday, 27 January 2013

Converting decimals,fractions,percents


Converting is not as tough as it looks, keep reading and I'll show you how to convert.
Converting means to change a fraction,decimal or a percent.

Converting fractions to decimals. 

You will need your numerator and your denominator (The numerator is how much pieces your using, the denominator is how much you have) and divide them both, ex. 3 divided by 12 is 0.25 (when were talking about fractions, that line in between the two numbers always means divide). 

Converting decimals to fractions.

There is not really an explanation of how to convert or change decimals to fractions.You just have to say it (ex. o.5= 5/10 (5 tenths), 0.32= 32/100 (32 hundreths).

Decimals to percents.

Decimals to percents are most likely the easiest "topic" to do when your converting. Just multiply the decimal by 100 and get the percentage of it. (ex. 0.40x100=40%, 0.64x100=64%)

Percents to Decimals.

Percents to decimals is exactly like decimals to percent but only opposite when it comes to multiplying. In this case (Percents to decimals) you will have to divide. (ex. 68 divided by 100=0.68, 9 divided by 100= 0.09, etc.

Percents to fraction.

The max pieces we have (or 100%) will be the denominator and how much we have (percentage) will be our numerator. ex. 60%=60/100, 12%=12/100.(Remember, denominator= how much pieces we have, numerator=how much pieces we are using.)

Thanks for reading,hope I helped you out by even just a bit. 

Have a great day,

                       Gabby S 7-72.


Friday, 25 January 2013

Converting Fractions, Decimals, Percents

Converting means to change or to turn it into something else .

Decimals to Percents- Multiply by 100 .
Ex. 0.62x100=62%

Percents to Decimals- Divide by 100 .
Ex. 48 divide it by 100=0.48

Percents to Fraction- Percent becomes NUMERATOR and 100 becomes DENOMINATOR .
Ex. 58 becomes 58/100

Decimals to Fractions- Say it .
Ex. 0.15= 15/100 , 0.9=9/10

Fraction to Decimals- Fraction means Divide .
Ex. 1/4 becomes 1 divided by 4=0.25


Comparing and Ordering Fractions

Compare:
When your comparing fractions, to tell which one is bigger you can find a denominator that they both have like if it's 3/4 and 7/10 you can multiply 3/4 by 10 (multiply the numerator and the denominator). You will get 30/40, now you must multiply 7/10 by 4 then you'll get 21/40. Now you can compare it
                                                                           
                            30/40  21/40

30/40 is bigger you now know 3/4 is bigger than 7/10

Ordering:  3/6, 4/12, 1/3, 3/5, 8/10
If your ordering fractions you can make them all have the same denominator.
3/6 X10     4/12 X 5     1/3 X 20     3/5 X 12     8/10 X 6
30/60         20/60          20/60          36/60          48/60
order now
20/60, 20/60, 30/60, 36/60, 48/60
be sure to change it back
1/3, 4/12, 3/6, 3/5, 8/10