Hallsville Prime/Comp.

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Below is a list of prime numbers in order. Fill in the blank with the missing prime number.

..., 11, 13, 17, __, 23, 29, ...

A factor is...

• A number that you divide by another number to get a quotient.

• A number that you add to another number to get a sum.

• A number that you multiply by another number to get a product.

• A number that you subtract by another number to get a difference.

75 is a prime number ​ ​ ​ (a)  

• true
• false

Which answer choice lists all of the factors for 20?

• 1, 2, 4, 10, 20

• 1, 2, 4, 5, 10, 20

• 2, 4, 5, 10

• 1, 20

Match the numbers to the words.

• Neither

• 42

• Composite

• 1

• Prime

• 61