NE 4.OA.4 - Factors and Multiples, Prime or Composite

Question 1

Find factor pairs of any number between 1 and 100.

Answer 1

Start with 1 times the number, then 2, then 3, and so on until you have tried all the possibilities. A calculator should be allowed for this.

Question 2

Find multiples of a number (multiples up to 100).

Answer 2

This is just the same as skip-counting by that number.

Question 3

Determine if a number is prime or composite.

Answer 3

You can do this by dividing the number by all of the prime numbers or just finding all the factor pairs starting with 1.

Question 4

What is a prime number?

Answer 4

In math, prime numbers are whole numbers greater than 1, that have only two factors – 1 and the number itself.
Prime numbers are divisible only by the number 1 or itself.

Question 5

What is a composite number?

Answer 5

A whole number that can be made by multiplying other whole numbers.

Question 6

What is a factor?

Answer 6

Multiplying two whole numbers gives a product. The numbers that we multiply are the factors of the product.

Question 7

What is a multiple?

Answer 7

Multiples are what we get after multiplying a number by another number.