Finding the Least Common Multiple

Finding the Least Common Multiple

Assessment

Interactive Video

Mathematics

5th - 6th Grade

Hard

Created by

Thomas White

FREE Resource

The video introduces a quick method to find the least common multiple (LCM) of numbers, a concept taught from class five and used in various exams. The teacher demonstrates the method with several examples, emphasizing choosing the greatest number and dividing it by others, multiplying if necessary. The video concludes with encouragement to practice for efficiency.

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11 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the video tutorial?

Finding the greatest common divisor

Learning a trick to calculate LCM quickly

Understanding prime factorization

Solving quadratic equations

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example with numbers 6, 4, and 12, what is the first step to find the LCM?

Multiply all the numbers

Find the prime factors

Add all the numbers

Choose the greatest number

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is 12 the LCM of the numbers 6, 4, and 12?

Because 12 is a prime number

Because 12 is the sum of 6 and 4

Because 12 is divisible by both 6 and 4

Because 12 is the smallest number

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example with numbers 5, 30, and 50, what is the LCM?

50

5

30

15

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the LCM of numbers 3 and 1?

1

3

4

6

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example with numbers 12, 6, and 4, what is the next step if the greatest number is not divisible by all others?

Add 1 to the greatest number

Multiply the greatest number by 2

Subtract 1 from the greatest number

Divide the greatest number by 2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the LCM of numbers 12, 6, and 4 after multiplying by 2?

18

24

36

48

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