Least Common Multiples

What is the Common Multiple of 18 and 21

(a)  

LCM stands for ___________.

• Less Common Multiple

• List Common Multiple

• Lease Common Multiple

• Least Common Multiple

There are 10 pigeons in the large ash tree outside Farmer Giles’ house. He shoots 1/5 of them. How many are left on the tree?

• 20

• 8

• none

• 2

John listed the first four multiples of 7 as:

7, 14, 22, 28

Which number in his list is incorrect?

• 7

• 14

• 22

• 28

Calculate 18 multiplied by 509.

• 8504

• 8984

• 9162

• 9387

What is the least common multiple (LCM) of 2 and 24?

• 24
• 2
• 12
• 48

What is the Least Common Factor of 27 and 36 (Except for 1)

• 12

• 9

• 3

• 3

What is the final step in finding the LCM?

• Adding the multiples together

• Choosing the smallest multiple that the numbers have in common

• Choosing the largest multiple

• Finding the average of the multiples

Find the Least Common Multiple of 9 and 6

• 18
• 36
• 38
• 72

Find the Least Common Multiple (LCM) of 4 & 14.

• 14
• 20
• 28
• 42