Finding the Least Common Multiple of Fractions

Mr. Nelson's tutorial focuses on finding the least common denominators (LCD) using a systematic approach. He demonstrates the method by creating tables of multiples for different sets of denominators, such as 6 and 3, 7 and 4, and more. The video includes examples with two and three numbers, highlighting the process of identifying the smallest common multiple. Mr. Nelson also provides tips for efficiently solving these problems in tests or homework. The tutorial concludes with a reminder to like, share, and subscribe.

What is the least common denominator (LCD) of 6 and 3?

• 12

• 9

• 6

• 3

What is the least common denominator (LCD) of 7 and 4?

• 21

• 35

• 14

• 28

What is the least common denominator (LCD) of 3 and 15?

• 12

• 9

• 15

• 3

What is the least common denominator (LCD) of 12 and 10?

• 60

• 40

• 30

• 20

What is the least common denominator (LCD) of 5 and 10?

• 5

• 10

• 15

• 20

What is the least common denominator (LCD) of 5, 10, and 15?

• 45

• 30

• 15

• 60

What is the least common denominator (LCD) of 20 and 4?

• 20

• 12

• 8

• 4

What is the least common denominator (LCD) of 3, 4, and 5?

• 15

• 12

• 60

• 18

What is the least common denominator (LCD) of 6, 9, and 18?

• 54

• 27

• 18

• 36

What is the least common denominator (LCD) of 8 and 12?

• 32

• 24

• 40

• 16