Divisibility Rules Explained
Divisibility Rules Explained Divisibility rules are simple shortcuts to determine whether a number can be divided by another number without actually performing the division. These rules help in quick calculations and are essential for exams and mental math. Divisibility Rules for Numbers 2 to 12 Rule for 2 A number is divisible by 2 if its last digit is even (0, 2, 4, 6, 8). Example: 124 is divisible by 2 (last digit is 4). Rule for 3 A number is divisible by 3 if the sum of its digits is divisible by 3. Example: 123 (1+2+3=6, which is divisible by 3). Rule for 4 A number is divisible by 4 if the last two digits form a number divisible by 4. Example: 316 (last two digits 16, 16÷4=4). Rule for 5 A number is divisible by 5 if its last digit is 0 or 5. Example: 235, 240. Rule for 6 A number is divisible by 6 if it is divisible by both 2 and 3. Example: 132 (divisible by 2 and 3). Rule for 7 Dou...