Everyone loves shortcuts and hacks, right? In this lesson we'll explore some divisibility shortcuts- basically rules that will let you know if a number can be divided by 2, 3, 5, or 10. For example, can you divide the number 3,480 by 5, without any remainders? Turns out you can! And you can also divide it by the numbers 2, 3, and 10 without any remainders. Knowing these rules will help boost your math skills, and you'll be so thankful for them!

- Recognize the characteristics that make numbers divisible
- Determine if a number can be divided by 2, 3, 5, or 10 without remainders

CCSS.MATH.CONTENT.4.OA.B.4

Find all factor pairs for a whole number in the range 1-100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1-100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.

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