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# Rules of Divisibility

Understanding the rules of divisibility and finding the numbers that can be appended to a given number to make it divisible by the given factors.

#### Mapped to CCSS Section# 4.NBT.B.6, 4.OA.B.4

Find whole-number quotients and remainders with up to four-digit dividends and one-digit divisors, using strategies based on place value, the properties of operations, and/or the relationship between multiplication and division. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.,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.