Understanding Factors and Prime Numbers

The video tutorial from Moomoomath and Science covers the factors of 139 and 140. It begins by explaining that 139 is a prime number with factors 1 and 139. The video then delves into the factors of 140, listing them as 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, and 140. A factor tree is constructed for 140, demonstrating the prime factors 2, 5, and 7. The video concludes with a reminder to subscribe and share the channel for daily math and science content.

What makes 139 a unique number in terms of its factors?

• It has more than two factors.

• It has only one factor.

• It is a composite number.

• It is a prime number.

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Which of the following is a factor pair of 140?

• 3 and 47

• 2 and 70

• 6 and 24

• 9 and 15

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What is the next factor pair of 140 after 2 and 70?

• 3 and 46

• 4 and 35

• 5 and 30

• 6 and 25

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Which factor pair of 140 is incorrectly stated in the video?

• 5 and 28

• 10 and 14

• 7 and 20

• 7 and 10

What is the first step in creating a factor tree for 140?

• Divide 140 by 7

• Divide 140 by 5

• Divide 140 by 2

• Divide 140 by 3

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In the factor tree of 140, which numbers are circled because they are prime?

• 10 and 14

• 2 and 35

• 5 and 7

• 4 and 35

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What is the purpose of the video as stated in the closing remarks?

• To teach science concepts

• To provide daily math and science videos

• To solve complex math problems

• To discuss historical math figures

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