Understanding Prime Numbers

This video tutorial introduces Year 5 students to the concept of prime numbers, explaining their characteristics and how to identify them. It covers examples of prime numbers within different ranges, including 1 to 100, and provides a step-by-step guide to recognizing prime numbers using division rules. The tutorial also includes exercises to reinforce learning and ensure students can identify prime numbers independently.

What is a prime number?

• A number divisible by 1 and itself only

• A number divisible by 2 and 3

• A number divisible by any number

• A number that is even

Tags

CCSS.4.OA.B.4

Which of the following numbers is a prime number?

• 5

• 6

• 8

• 4

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CCSS.4.OA.B.4

Why is the number 9 not considered a prime number?

• It is divisible by 1 and 9 only

• It is divisible by 3

• It is a single-digit number

• It is an even number

Tags

CCSS.4.OA.B.4

Which number between 10 and 20 is a prime number?

• 18

• 17

• 15

• 12

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CCSS.4.OA.B.4

What makes the number 15 not a prime number?

• It is a multiple of 3

• It is an odd number

• It is divisible by 5

• It is a two-digit number

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CCSS.4.OA.B.4

Which of the following numbers is a prime number between 20 and 40?

• 39

• 21

• 29

• 35

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CCSS.4.OA.B.4

Why is the number 33 not a prime number?

• It is an odd number

• It is a two-digit number

• It is divisible by 3

• It is a multiple of 5

Tags

CCSS.4.OA.B.4

How many prime numbers are there between 1 and 100?

• 20

• 25

• 30

• 35

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CCSS.4.OA.B.4

Which of the following numbers is a prime number between 1 and 100?

• 67

• 77

• 57

• 51

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CCSS.4.OA.B.4

What is unique about the number 2 among prime numbers?

• It is a multiple of 3

• It is a two-digit number

• It is the largest prime number

• It is the only even prime number

Tags

CCSS.4.OA.B.4