6:33 Divisibility tests for 2, 3, 4, 5, 6, 9, 10 | Factors and multiples | Pre-Algebra | Khan Academy
Clear worked walk-through of the divisibility tests for 2, 3, 4, 5, 6, 9 and 10.
Tests of divisibility
Know and use tests of divisibility
2 hand-picked video lessons for this topic, each checked for relevance and clarity, graded by difficulty and labelled by depth. Press play to watch — nothing loads from YouTube until you do.
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8:56 Divisibility Rules for 2, 3, 4, 5, 6, 7, 8, 9, & 10 | Division Made Easy
Covers every test from 2 to 10, including the trickier 7 and 8, with clear examples.