Understanding Division and Prime Numbers

What is the inverse operation of multiplication?

• Division

• Subtraction

• Exponentiation

• Addition

How can we interpret the division of 6 by 3?

• As multiplying 6 by 3

• As adding 3 to 6

• As dividing 6 into 3 equal parts

• As subtracting 3 from 6

What happens when you divide 5 by 2 using natural numbers?

• The result is a natural number

• The result is not a natural number

• The result is zero

• The result is five

Which of the following is a factor of 6?

• 7

• 9

• 3

• 5

What defines a prime number?

• A number with exactly two factors

• A number with only one factor

• A number that is even

• A number with more than two factors

Which number is not a prime number?

• 5

• 4

• 3

• 2

What is the Sieve of Eratosthenes used for?

• Finding the sum of numbers

• Identifying prime numbers

• Calculating division

• Multiplying numbers

Which of the following numbers is composite?

• 11

• 13

• 15

• 17

What is a quick way to determine if a number is divisible by 3?

• Check if it is an even number

• Check if the sum of its digits is divisible by 3

• Check if it ends in 5

• Check if it ends in 0

Why is it challenging to find large prime numbers?

• They are all even

• They have many factors

• There is no largest prime number

• They are all less than 100