Divisibility Rules and Concepts

The video tutorial explains the divisibility rules for numbers 2, 3, 4, and 5. It begins with an introduction to the rules, followed by detailed explanations for each number. For 2, a number is divisible if it is even. For 3, the sum of the digits must be divisible by 3. For 4, the last two digits must be divisible by 4. For 5, the last digit must be 0 or 5. The video includes examples using the numbers 270 and 375 to demonstrate these rules in practice.

What is the main topic discussed in the video?

• Fraction simplification

• Multiplication tables

• Divisibility rules

• Prime numbers

Tags

CCSS.2.OA.C.3

Which of the following numbers is considered even?

• 3

• 5

• 8

• 9

Tags

CCSS.3.OA.D.9

How can you determine if a number is divisible by 3?

• Check if it ends in 5

• Add the digits and see if the sum is divisible by 3

• Check if it ends in 0

• Divide by 2 and check if the result is even

Tags

CCSS.3.OA.D.9

What is the rule for checking divisibility by 4?

• Divide by 3 and check if the result is even

• Check if the last two digits form a number divisible by 4

• Add all digits and check if the sum is divisible by 4

• Check if the last digit is 0

Tags

CCSS.4.OA.B.4

Is the number 270 divisible by 4?

• Yes, because 2 + 7 + 0 = 9

• No, because 70 is not divisible by 4

• Yes, because it ends in 0

• No, because it ends in 5

Which numbers is 270 divisible by?

• 2, 3, and 4

• 2, 3, and 5

• 2, 4, and 5

• 3, 4, and 5

Is the number 375 divisible by 2?

• Yes, because it ends in 0

• No, because it ends in 5

• Yes, because 3 + 7 + 5 = 15

• No, because it ends in 3

Which numbers is 375 divisible by?

• 2 and 4

• 4 and 5

• 3 and 5

• 2 and 3