Finding the Least Common Multiple

The video tutorial explains how to find the least common multiple (LCM) using different methods. It starts with an introduction to LCM and demonstrates finding the LCM of numbers 3 and 4. An alternative method using the upside-down birthday cake approach is introduced. The video further explores finding the LCM of 15 and 18 using prime numbers and concludes with calculating the LCM for three numbers: 2, 10, and 12.

What is the primary focus of the video tutorial?

• Exploring multiplication techniques

• Learning about prime numbers

• Understanding the concept of LCM

• Finding the greatest common factor

What are the first three multiples of 3?

• 5, 10, 15

• 4, 8, 12

• 6, 12, 18

• 3, 6, 9

Which number is the least common multiple of 3 and 4?

• 12

• 9

• 6

• 15

Which of the following is NOT a multiple of 4?

• 8

• 12

• 16

• 18

What is the least common multiple of 3 and 4 using the traditional method?

• 15

• 6

• 9

• 12

What is the alternative method used to find the LCM of 3 and 4?

• Using prime factorization

• Using the upside-down birthday cake method

• Using division

• Using addition

What is the LCM of 3 and 4 using the upside-down birthday cake method?

• 12

• 9

• 15

• 6

Which prime number can be taken out from both 15 and 18?

• 2

• 3

• 7

• 5

What is the LCM of 15 and 18?

• 45

• 75

• 90

• 60

What is the result of multiplying 3, 5, and 6 in the LCM calculation?

• 60

• 75

• 90

• 105