I need to identify and circle the prime numbers from the list provided in the worksheet. First, I'll recall what a prime number is: a natural number greater than 1 that has no positive divisors other than 1 and itself.
Let me go through the numbers one by one:
- 18: Divisible by 2, 3, 6, 9 → Not prime
- 27: Divisible by 3, 9 → Not prime
- 23: Only divisible by 1 and 23 → Prime
- 8: Divisible by 2, 4 → Not prime
- 7: Only divisible by 1 and 7 → Prime
- 33: Divisible by 3, 11 → Not prime
- 39: Divisible by 3, 13 → Not prime
- 37: Only divisible by 1 and 37 → Prime
- 22: Divisible by 2, 11 → Not prime
- 16: Divisible by 2, 4, 8 → Not prime
- 3: Only divisible by 1 and 3 → Prime
- 6: Divisible by 2, 3 → Not prime
- 9: Divisible by 3 → Not prime
- 5: Only divisible by 1 and 5 → Prime
- 11: Only divisible by 1 and 11 → Prime
- 30: Divisible by 2, 3, 5, 6, 10, 15 → Not prime
- 41: Only divisible by 1 and 41 → Prime
- 36: Divisible by 2, 3, 4, 6, 9, 12, 18 → Not prime
- 25: Divisible by 5 → Not prime
- 29: Only divisible by 1 and 29 → Prime
- 17: Only divisible by 1 and 17 → Prime
- 32: Divisible by 2, 4, 8, 16 → Not prime
- 38: Divisible by 2, 19 → Not prime
- 13: Only divisible by 1 and 13 → Prime
- 47: Only divisible by 1 and 47 → Prime
- 30: Divisible by 2, 3, 5, 6, 10, 15 → Not prime (already checked)
- 38: Divisible by 2, 19 → Not prime (already checked)
- 28: Divisible by 2, 4, 7, 14 → Not prime
- 16: Divisible by 2, 4, 8 → Not prime (already checked)
- 40: Divisible by 2, 4, 5, 8, 10, 20 → Not prime
- 5: Only divisible by 1 and 5 → Prime (already checked)
- 25: Divisible by 5 → Not prime (already checked)
- 35: Divisible by 5, 7 → Not prime
- 45: Divisible by 3, 5, 9, 15 → Not prime
- 15: Divisible by 3, 5 → Not prime
- 16: Divisible by 2, 4, 8 → Not prime (already checked)
- 4: Divisible by 2 → Not prime
- 2: Only divisible by 1 and 2 → Prime
- 12: Divisible by 2, 3, 4, 6 → Not prime
- 18: Divisible by 2, 3, 6, 9 → Not prime (already checked)
The prime numbers in the list are: 23, 7, 37, 3, 5, 11, 41, 29, 17, 13, 47, and 2.
Therefore, I would circle these numbers on the worksheet.
Parent Tip: Review the logic above to help your child master the concept of prime number worksheet pdf.
