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Factors, multiples, prime and composite numbers Knowledge-Based Practice

Math · Number Sense & Operations · Math · Counting & Place Value

5 Math practice questions on Factors, multiples, prime and composite numbers. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    What is the difference between the greatest two-digit prime number and the least two-digit composite number?

    • A) 85
    • B) 86
    • C) 88
    • D) 87
  2. 2.

    What is the sum of all the distinct prime factors of the number 90?

    • A) 8
    • B) 9
    • C) 10
    • D) 13
  3. 3.

    What is the sum of all prime numbers strictly between 10 and 25?

    • A) 83
    • B) 81
    • C) 85
    • D) 104
  4. 4.

    Which of the following numbers is a composite number that has both 3 and 5 as factors, but is not a multiple of 2?

    • A) 30
    • B) 35
    • C) 45
    • D) 50
  5. 5.

    Which of the following numbers has exactly three distinct positive factors?

    • A) 12
    • B) 27
    • C) 36
    • D) 49

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