Divisibility Rules

In this video we will go over divisibility rules for 2 through 17. When we say a number is divisible by another number, we mean that if we divide a whole number by another whole number that the result will be a whole number. So why do we care? For example, divisibility rules can help us reduce fractions and find the prime factors for a number. While many of these are important to know, some are provided just for fun (like the rule for divisible by 17.) 0:00 Introduction 1:07 Divisible by 2 1:25 Divisible by 3 1:30 Divisible by 4 2:10 Divisible by 5 2:27 Divisible by 6 2:54 Divisible by 7 3:24 Divisible by 8 3:45 Divisible by 9 4:08 Divisible by10 4:22 Divisible by 11 5:04 Divisible by 12 5:39 Divisible by 13 7:11 Divisible by 15 7:48 Divisible by 17