Divisibility Rules

Welcome to Teacher Tania’s channel! In today’s lesson, we are uncovering the secrets of divisibility rules to help you become a math pro. What is Divisibility? We define divisibility as being able to divide two numbers without leaving any remainder . For example, 12 is divisible by 2 (12÷2=6), but it is not divisible by 5 because that would leave a remainder . Understanding these rules is a great shortcut for finding the factors of a number, because a number is always divisible by its factors What You’ll Learn in This Video: We break down the most common rules to help you decide if a number is divisible by another at a glance: The Rule of 2: Is the ones digit 0, 2, 4, 6, or 8? The Rule of 3: Learn why adding the digits together (like 3+2+4=9) can tell you if the whole number is divisible by 3 The Rule of 4: Look at the number formed by the last two digits The Rule of 5: Check if the ones digit is a 0 or a 5 The Rule of 6: Discover why a number must be divisible by both 2 and 3 to be divisible by 6 The Rule of 8: Focus on the number formed by the last three digits The Rule of 10: The easiest rule—just look for a 0 in the ones place! Make sure to watch until the very end, where we provide a summary table of all these rules for you to save and use while you study Ready for more? If you want to test your skills, try out some practice problems to master these divisibility rules #mathhelp #5thgrademath #divisibilityrules #teachertania #mathshortcuts #factorsandmultiples #elementarymath #studytips