Lesson 5-1

Lesson 5-1 "Comparing & Ordering Fractions"
Part 1 "Finding the Least Common Multiple"

1. List Multiples and Compare
2. PF and choose the necessary factors
3. EX: 180 & 378
180 = 2*2*3*3*5 & 378 = 2*3*3*3*7
LCM is 2*2*3*3*3*5*7 = 3780

Part 2 "Comparing Fractions"

4. Use the LCM to find the LCD
LCD = Least Common Denominator
5. EX: 4/6 & 5/8 (lcm = 24)
4/6 = 16/24, 5/8 = 15/24, 16 > 15, 4/6 > 5/8

This page was last modified 09/14/07