Math Testing 3 or 4 Digits

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.

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.

Which of these is divisible by 3?

• 3131

• 71

• 6043

• 804

Which of these is divisible by 10?

• 8105

• 375

• 460

• 52

There is a three digit number. The second digit is four times as big as the third digit, while the first digit is three less than the second digit. What is the number?

• 234

• 141

• 575

• 267

Which of these is divisible by 6?

• 318

• 215

• 7000

• 4765

Which of these is divisible by 9?

• 1308

• 495

• 361

• 842

Any number is divisible by 6 if it is divisible by

• 2 and 3

• 2 and 4

• 9 and 1

• 5 and 10

Any number is divisible by 9 if the sum of the digitis

• is divisible by 9

• is divisible by 4

• ends in 0 or 5

• ends in 3, 6, or 9

What is the divisibility rule for 5?

• The digits must add up to 10.

• The last digit needs to be a 5 or 0.

• The last digit can only be a 5.

• The sum of the digits need to be divisible by 5.