GCF & LCM Practice

Find LCM

list multiples of each number--find the first multiple that is in both lists

Factor

one of 2 numbers that multiplied together gives a product

Multiple

the product of 2 numbers

Find GCF

Create T-charts, list ALL factors of both numbers, find the largest COMMON factor

4

GCF of 12 and 20

1

GCF of 2 and 7

10

GCF of 50 and 40

2

GCF of 6 and 10

6

GCF of 6 and 12

3

GCF of 9 and 6

GCF

Greatest Common Factor

60

LCM 12 and 20

24

LCM of 12 and 24

14

LCM of 2 and 7

20

LCM of 5 and 4

30

LCM of 6 and 10

12

LCM of 6 and 12

56

LCM of 8 and 7

LCM

Least Common Multiple

Greatest Common Factor

The largest numbers that is a factor for both the numbers being compared

Least Common Multiple

The smallest number that is a product of both numbers being compared