CCSS 4.OA.4 (Common Core, 4th Grade): "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." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.
Operations and Algebraic Thinking Gain familiarity with factors and multiples.4Find 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.
Use multiple rules (multiples of 3 have digits that add to 3, multiples of 5 end in 5 or 0, etc) to determine if a number is a multiple of another number.
Use multiplication facts to decide which numbers are multiples of a given number.