Question

rules of divisibility
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Answer 1

A divisibility test is a rule for determining whether one whole number is divisible by another. It is a quick way to find factors of large numbers. Divisibility Test for 3: if the sum of the digits of a number is divisibleby 3, then the number is divisible by 3.

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Answer 2

A divisibility rule is a shorthand way of determining whether a given integer is divisible by a fixed divisor without performing the division, usually by examining its digits.

• Divisible by 2?

Rule: If it ends with a 0, 2, 4, 6, or 8

• Divisible by 3?

Rule: If the sum of the digits is a multiple of 3

• Divisible by 4?

Rule: If the last two digits are a multiple of 4

(or if the last two digits are 00)

• Divisible by 5?

Rule: If it ends with a 5 or a 0

• Divisible by 6?

Rule: If it is divisible by 2 and by 3

• Divisible by 9?

Rule: If the sum of the digits are a multiple of 9..........

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