Name: What Is the Divisibility Rule for 3?
Uploaded: 2023-05-22T11:42:25.799Z
Channel: House of Math
Description: A number is divisible by 3 if the sum of its digits is divisible by 3. This video explains why this is, and demonstrates how to use the rule, with examples.

A number is divisible by 3 if the sum of its digits is divisible by 3. This video explains why this is, and demonstrates how to use the rule, with examples.

A number is divisible by another number if the answer does not have a remainder. Or, said another way, if the divisor is a factor of the dividend.

A symbol used to represent a number. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 are digits. For example, 19 has two digits, 1 and 9.

The remainder is what you’re left with when dividing one whole number by another

Long division is a method you can use to divide numbers by hand

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Definition

Divisibility Rule for 2

Divisibility Rule for 3

Divisibility Rule for 4

Divisibility Rule for 5

Divisibility Rule for 6

Divisibility Rule for 7

Divisibility Rule for 8

Divisibility Rule for 9

Divisibility Rule for 10

Divisibility Rules

A number is divisible by 3 if the sum of its digits is divisible by 3. This video explains why this is, and demonstrates how to use the rule, with examples. 