Do any of you math stars want to answer some question? I have most of the answers but want to compare them?

Question

1.What is the difference between prime and composite numbers?Provide two examples
for each.

2. What is the difference between a factor and a multiple? Provide two examples of each.

3. Is the number 1 (prime, composite, or neither)? Explain your answer.

4. List all of the prime numbers 1-100.

5. Define least common denominator (LCD) and greatest common factor (GCF). Provide
two examples of each.

6. Find the LCD and GCF 27 and 45. EXPLAIN in detail how you found each answer.

7. Use your book or research on the internet. Help your group by listing divisibility rules.
How can tell if a number is divisible by 2, 3, 5, 6, 9, and 10?

8. What does it mean for a number to be "divisible" by another? Provide two examples.

9. If a number is divisible by another number, will it ever have a remainder? Provide two
examples of numbers that are NOT divisible by another. Make sure you indicate the
remainder (ex. 5 r 3- Use little r for the remainder in your answer.)

10. How will the GCF help you REDUCE fractions? Provide two examples.

11. In the next section of chapter 2, we will learn how to add and subtract fractions. To
add and subtract fractions, you must have the SAME number on the bottom parts of the
fractions. How will finding the LEAST COMMON DENOMINATOR be helpful in this process?
How will this help if we had to add 5/12 + 7/8? Explain your answer.

12. Find the prime factors of a) 76, b) 97, and c) 145, and d) 2,007. Explain how you got
the answers..not just listing the answer.

Answer 1

3. 1 is neither. It is not prime since that definition says the only factors are 1 and itself implying a distinctly different number for the second factor. It is not composite because it doesn't have any other factors besides 1, so it is neither.

4. 2,3,5,7,11,13,17,19,23,29,31
,37,41,43,47,51,53,57,59,61,67,
71,73,79,83,87,89,91,97, I think. You might want to double check that.

7. Divisiblity rules
Divid by 2 if the last digit is even
Divide by 3 if the digits add up to a multiple of 3
Divide by 5 if the number ends in 5 or 0
Divide by 9 (can't quite remember this one) If digits add up to a multiply of 9????
Divide by ten if the number ends in 0.

Answer 2

Prime numbers are numbers that can only be divided into itself and 1. Composite numbers have more factors than just 1.
A factor is numbers that can go into the number like 8, numbers that can go into it is 1,2, & 4,. Multiples are the numbers that is multiplyed by the other number like if i have 12 multiples of 12 would be 24 (12x2), 36 (12x3) and so on...... the number 1 is i thnk prime because it can go into 1 and by itself.... well yeah i think that is all i can answer right now because i g2g and answer my e-mails! hope you got a good comparison!