Finding Least Common Multiple Methods

Finding Least Common Multiple Methods

Assessment

Interactive Video

Mathematics

6th - 7th Grade

Hard

Created by

Thomas White

FREE Resource

The video tutorial reviews the concept of the least common multiple (LCM) using a special request from a viewer to find the LCM of three numbers: 12, 30, and 75. The instructor demonstrates the upside down birthday cake method, explaining how to identify common factors and calculate the LCM step by step. The video concludes with the final LCM result of 300 and a thank you to the viewers.

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main topic of the video?

Least Common Multiple

Greatest Common Divisor

Prime Factorization

Fraction Addition

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is used in the video to find the LCM?

Long Division

Upside-Down Birthday Cake

Euclidean Algorithm

Prime Factorization

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the numbers used in the example for finding the LCM?

10, 20, 30

5, 15, 25

8, 16, 24

12, 30, 75

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first prime number used to divide the numbers 12, 30, and 75?

3

2

7

5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

After dividing by 3, what are the resulting numbers?

4, 10, 25

6, 15, 30

3, 5, 15

2, 5, 10

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the next step after dividing by 3 in the upside-down birthday cake method?

Multiply the results

Divide by 2

Divide by 5

Add the results

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which two numbers can be divided by 2 in the next step?

10 and 25

4 and 25

2 and 5

4 and 10

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