What is the main topic of the lesson introduced in the video?
Greatest Common Factor of 3 Numbers

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Mathematics
•
6th - 7th Grade
•
Hard
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Learning about Prime Numbers
Understanding the Greatest Common Factor
Finding the Least Common Multiple
Exploring Algebraic Expressions
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the term 'greatest' refer to in the context of GCF?
The smallest number
The largest number
The most common number
The least common number
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which number is used as the starting point to find its factors?
42
84
210
126
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is a factor of 42?
11
9
6
5
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in finding the GCF of multiple numbers?
Start with the smallest number
Start with the largest number
Divide by 2
List all numbers
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the greatest common factor of 42, 126, and 210?
7
21
14
42
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is it efficient to start with the largest factor when checking divisibility?
It is easier to remember
It ensures accuracy
It is a mathematical rule
It saves time by reducing calculations
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