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Understanding GCF, LCM, and LCD

Understanding GCF, LCM, and LCD

Assessment

Interactive Video

Mathematics

4th - 6th Grade

Practice Problem

Medium

CCSS
4.OA.B.4

Standards-aligned

Created by

Mia Campbell

Used 11+ times

FREE Resource

Standards-aligned

CCSS.4.OA.B.4
This video tutorial teaches students how to find the greatest common factor (GCF), least common multiple (LCM), and least common denominator (LCD). It begins with an introduction to factors, providing examples to illustrate the concept. The tutorial then explains how to determine the GCF by listing factors and identifying the largest common one. Next, it covers the LCM, showing how to list multiples and find the smallest common multiple. Finally, the video demonstrates how to calculate the LCD for fractions by finding the least common multiple of the denominators. The lesson concludes with a recap of the key points covered.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the factors of 12?

1, 3, 5, 15

1, 2, 4, 8, 16

1, 2, 3, 4, 6, 12

1, 2, 5, 10

Tags

CCSS.4.OA.B.4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a factor of 16?

10

12

8

5

Tags

CCSS.4.OA.B.4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a factor of 12?

2

3

5

6

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the greatest common factor of 6 and 9?

1

2

6

3

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which number is the greatest common factor of 8 and 2?

1

8

2

4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the least common multiple of 10 and 2?

20

2

5

10

Tags

CCSS.4.OA.B.4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a multiple of 2?

8

7

5

3

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