Tests for Divisibility: Easy Methods Explained
Tests for Divisibility of Numbers Let us see whether we can find a pattern that can tell us whether a number is divisible by 2, 3, 4, 5, 6, 8, 9, 10 or 11. Tests for Divisibility of Numbers Divisibility by 2 Divisibility by 3 Divisibility by 4 Divisibility by 5 Divisibility by 6 Divisibility by 7 Divisibility by 8 Divisibility by 9 Divisibility by 10 Divisibility by 11 Divisibility by 2 A number Is divisible by 2 if its ones digit Is 0 , 2 , 4 , 6 or 8 . Example 1 Each of the numbers 30. 52, 84, 136, 2108 Is divisible by 2. Example 2 None of the numbers 71, 83, 215, 467, 629 is divisible by 2. Divisibility by 3 A number is divisible by 3 If the sum of Its digits is divisible by 3. Example 1 Consider the number 64275. Sum of its digits = (6 + 4 + 2 + 7 + 5) = 24, which Is divisible by 3. Therefore. 64275 is divisible by 3. Example 1 Consider the number 39583. Sum of its digits = (3 + 9 + 5 + 8+ 3) = 28, which is not divisible by 3. Therefore, 39583 is not divisible by 3. Divis...
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