Greatest Common FactorLeast Common Multiple

andLowest Terms

Example 1 find the GCF, LCM and lowest terms of

48 and 8048 and 80 Step 1: set up your upside down division

Step 2: find a number that will divide into both numbers

2

Step 3: divide24 and 40Step 4: repeat until you can’t find any common numbers to divide by

2

12 and 202

2 6 and 103 and 5

GCF: multiply the numbers on the outside on the left together2 • 2 • 2 •2 = 16

LCM: multiply all of the numbers on the outside together

2 • 2 • 2 •2 • 3 • 5 = 240

Lowest terms: look at the bottom numbers only to make your fraction

35

Example 2 find the GCF, LCM and lowest terms of

208 and 112208 and 112 Step 1: set up your upside down division

Step 2: find a number that will divide into both numbers

2

Step 3: divide104 and 56Step 4: repeat until you can’t find any common numbers to divide by

2

52 and 282

2 26 and 1413 and 7

GCF: multiply the numbers on the outside on the left together2 • 2 • 2 •2 = 16

LCM: multiply all of the numbers on the outside together

2 • 2 • 2 •2 • 7 • 13 = 1456

Lowest terms: look at the bottom numbers only to make your fraction

137

67

= 1

Example 1 find the GCF, LCM and lowest terms of

15 and 3215 and 32 Step 1: set up your upside down division

Step 2: find a number that will divide into both numbers

1

Step 3: divide15 and 32Step 4: repeat until you can’t find any common numbers to divide by

GCF: multiply the numbers on the outside on the left together

1

LCM: multiply all of the numbers on the outside together

1 • 15 • 32 = 480

Lowest terms: look at the bottom numbers only to make your fraction

1532

Greatest Common FactorLeast Common Multiple

andLowest Terms

Date _________

Example 1 find the GCF, LCM and lowest terms of

48 and 8048 and 80 Step 1: set up your

Step 2: find a number that will ______ into both numbersStep 3:Step 4:

GCF: multiply the numbers on the outside on the left together

LCM: multiply all of the numbers on the outside together

Lowest terms: look at the bottom numbers only to make your fraction

Example 2 find the GCF, LCM and lowest terms of

208 and 112208 and 112

104 and 56

52 and 2826 and 14

Example 3 find the GCF, LCM and lowest terms of

15 and 32