MathematicsBeginner

Tests for divisibility by 2, 3 and 5

Endings for 2 and 5, digit sum for 3

Estimated time · 8 min 9 Content blocks

Core concepts

Formulas

3 \mid n \iff 3 \mid (\text{各位数字之和})

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Solution

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Solution steps

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Worked examples

Example

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Worked example

Worked examples

Example

Solution steps

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Exercises

Fill in the blank

Prerequisites

Factors and multiples8 min

Practice set

Answered 0 / 6

1Fill in the blank

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2Fill in the blank

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3Fill in the blank

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4True / False

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5True / False

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6True / False

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