Divisibility rules

Learning Objectives Define key terms related to divisibility, such as 'divisible' and 'remainder'. Apply the divisibility rule for 2 to determine if a number is even. Apply the divisibility rule for 3 to check if a number is a multiple of 3. Apply the divisibility rule for 5 to identify numbers ending in 0 or 5. Apply the divisibility rule for 10 to quickly identify multiples of 10. Use multiple divisibility rules to analyze larger numbers efficiently. Explain the practical benefits of using divisibility rules in mathematics. Ever wondered if a large number like 7,344 can be perfectly divided by 3 without actually doing the long division? 🤔 What if there was a quick trick? In this lesson, you'll discover amazing shortcuts called divisibility rule...

TermDefinitionExample DivisibleA number is divisible by another number if, when you divide them, the remainder is zero. It means one number can be divided exactly by the other.12 is divisible by 3 because 12 ÷ 3 = 4 with a remainder of 0. RemainderThe amount left over after performing a division that does not divide evenly.When 13 is divided by 3, the quotient is 4 and the remainder is 1. FactorA number that divides another number exactly, without leaving a remainder.The factors of 12 are 1, 2, 3, 4, 6, and 12. MultipleA number that can be divided by another number without a remainder. It's the result of multiplying a number by an integer.The multiples of 3 are 3, 6, 9, 12, 15, and so on. DigitAny of the ten symbols (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) used to write numbers.In the number 4...

Divisibility Rule for 2 A number is divisible by 2 if its last digit is an even number (0, 2, 4, 6, or 8). This rule helps you quickly identify even numbers. Just look at the very last digit of the number. Divisibility Rule for 3 A number is divisible by 3 if the sum of its digits is divisible by 3. To use this rule, add up all the digits in the number. If that sum is a multiple of 3, then the original number is also a multiple of 3. Divisibility Rule for 5 A number is divisible by 5 if its last digit is 0 or 5. This is a very straightforward rule. Simply check if the number ends with a 0 or a 5. Divisibility Rule for 10 A number is divisible by 10 if its last digit is 0. Similar to the rule for 5, this rule only requires you to look at the last digit. If it&...