Posted by **lisa** on Monday, December 13, 2010 at 5:33pm.

Find the LCD and add the fractions.

1/125 + 4/50=

11/24

1/1250

1/35

551/6250

(Points: 5)

im not getting the concept of this some help is really needed please

- college maths -
**Ms. Sue**, Monday, December 13, 2010 at 5:39pm
LCD = least common denominator

The LCD is the smallest number that can be divided evenly by both denominators. One way to do that is to list the multiples.

125, 250, 375, 525

50, 100, 150, 200, 250, 300

The smallest number in both lists is 250.

250 / 125 = 2

1/125 * 2 = 2/250

250/50 = 5

4/50 * 5 = 20/250

2/250 + 20/250 = 22/250

Simplifying 22/250 = 11/125

Study this site for a further explanation.

http://www.mathsisfun.com/least-common-denominator.html

- college maths -
**lisa**, Monday, December 13, 2010 at 5:50pm
thanks very much i now have a better understanding

- college maths -
**Ms. Sue**, Monday, December 13, 2010 at 6:03pm
You're welcome. I'm glad I could help.

- college maths -
**martine**, Thursday, September 18, 2014 at 4:36pm
20/250= 10/125

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