Divisibility Rules

What is the divisibility rule for 3?

• Add up the digits. The sum must be even and divisible by 3.
• The digits must add up to 9.
• The last digit must be a 3.
• Add up the digits. The sum must be divisible by 3.

Tags

CCSS.4.OA.B.4

252 is divisible by 9 because:

• The digits add up to 18.

• The sum of the digits is divisible by 9.

• It's even and the sum of the digits is divisible by 3.

• The sum of the digits is even.

Tags

CCSS.4.OA.B.4

Which of these is divisible by 10?

• 8105
• 375
• 460
• 52

Tags

CCSS.4.OA.B.4

Which of these is divisible by 6?

• 318
• 215
• 7000
• 4765

Tags

CCSS.4.OA.B.4

Which of these id divisible by 9?

• 1308
• 495
• 361
• 842

Tags

CCSS.4.OA.B.4

Which of the following numbers is NOT divisible by 4?

• 1000
• 1566
• 5740
• 2024

Tags

CCSS.4.OA.B.4

Is 525 divisible by 5?

• Yes
• No

Tags

CCSS.4.OA.B.4

The divisibility rule for 9 is...

• Divide the whole thing by nine
• Add the digits together.  If the sum is divisible by 9, the original number is divisible by 9
• Multiply the digits together by 9
• Add the digits together and then add 9.

Tags

CCSS.3.OA.D.9

105 is NOT divisible by which number?

• 1
• 2
• 3
• 5

Tags

CCSS.4.OA.B.4

Is 2,385 divisible by 10?

• Yes
• No

Tags

CCSS.4.OA.B.4