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Divisibility and Divisibility Rules

Numbers and Decimals Divisibility and Divisibility Rules

🎬 Video Tutorial

(0:01) Divisibility Definition: A number is divisible by another if it divides exactly with no remainder.
(0:45) Divisibility by 2, 4 and 8: A number is divisible by 2 if its last digit is even; divisible by 4 if its last two digits form a number divisible by 4; and divisible by 8 if its last three digits form a number divisible by 8.
(1:34) Divisibility by 3, 6, and 9: A number is divisible by 3 if the sum of its digits is divisible by 3; divisible by 9 if the sum of its digits is divisible by 9; and divisible by 6 if it is divisible by both 2 and 3.
(2:52) Divisibility Rules for 5 and 10: A number is divisible by 5 if its last digit is 0 or 5, and divisible by 10 if it ends in 0.

📂 Revision Cards

Illustration explaining divisibility using bananas to represent division of 9 by 2 and 3, showing a remainder with 2 and no remainder with 3. — 1) Divisibility

Divisibility rules for 2, 4, and 8 showing conditions based on last digits, examples 26, 328, 6160, and their corresponding calculations. — 2) Divisibility Rules for 2,4,8

Divisibility rules for 3, 9, and 6 showing conditions based on last digits, examples 543, 198, 402, and their corresponding calculations. — 3) Divisibility Rules for 3,6,9

Showing that numbers are divisible by 5 if the last digit is 0 or 5, and divisible by 10 if the last digit is 0, with examples 415 and 320. — 4) Divisibility Rules for 5, 10

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