What is the best and the easiest way of calculating the common denominator?

Question

and what happens when you have four fractions to order in size, can you do the common denominator for all the four fractions

Answer 1

do cross multiplication... eg: common denominator of 1/9 and 1/4:

1/9 x 4=4/36
1/4x9= 9/36

eg: common denominator of 1/2 and 1/3:

1/2 x 3=3/6
1/3 x 2=2/6

Answer 2

find the common least multiple of the denominators
Ex:
6,4
the common denominator will be 12
6 4 | 2
3 2 2
3 1 3
1 1

2*2*3=12

Answer 3

you will desire to locate the top factorization of each value on your denominators. then you definitely use each and each factor of the top factorization the main important style of circumstances that's looks. that would not help lots, does it. 3/5 + 7/ 9 = 5 --> a million * 5 9 --> 3 * 3 = 3^2 The lcd = 5 * 3^2 = 40 5 7/15 - 8/ 25 15 --> 3 * 5 25 --> 5 * 5 = 5^2 lcd = 3 * 5^2 = seventy 5 5/12 - a million/9 = 12 --> 2 * 2 * 3 = 2^2 * 3 9 --> 3 * 3 = 3^2 lcd = 2^2 * 3^2 = 36 5/24 + 3/40 9 24 --> 2 * 2 * 2 * 3 = 2^3 * 3 40 9 --> 7 * 7 = 7^2 lcd = 2^3 * 3 * 7^2 = 1176

Answer 4

The EASIEST way of calculating the common denominator, if you have Internet access available, is to go to:

http://fclass.vaniercollege.qc.ca/web/mathematics/real/Calculators/GcdLcm_Calc_1.htm

The EASIEST way to determine the order/sequence of fractions would be to convert them to decimals. If you have Internet access available, you can use the fraction to decimal converter found at:

http://www.csgnetwork.com/fract2decimalcalc.html

The EASIEST way to add, subtract, multiply, or divide fractions, if you have Internet access available, is by using:

http://www.helpwithfractions.com/fraction-calculator.html

Although these on-line calculators provide a quick-fix to your dilemma, they do not teach you the underlying principles. Therefore, it may be in your best interest to attempt your problems by hand, using the tools to confirm your answers, until you are confident you understand the underlying principles.

Answer 5

See Wot Both Of The Denoimators Go Into Then See Which Is Biggest !!!

Answer 6

<>It's been soooo loooong...OK, it goes something like: Multiply the first 2 denominators together and see if all the others divide into it. If not, multiply the second 2, and so on.

Answer 7

think "least common multiple"

Answer 8

LCM ....... you can find it for any number of fractions.