Factors and Prime Numbers of 55

The video tutorial explains how to find the factors of 55 by starting with 1 and 55 and identifying all numbers in between that multiply to 55. It demonstrates that 5 and 11 are factors, and further explains how to find the prime factors using a factor tree, identifying 5 and 11 as the prime numbers. The video concludes with a brief promotion of the channel, encouraging viewers to subscribe and share.

What is the first step in finding the factors of a number like 55?

• Use a calculator

• Begin with 1 and the number itself

• List all even numbers

• Start with 2 and check divisibility

Which of the following numbers is a factor of 55?

• 6

• 4

• 5

• 3

How many factors does the number 55 have?

• 4

• 5

• 3

• 2

What is the purpose of a factor tree in finding prime numbers?

• To calculate the sum of factors

• To find the greatest common divisor

• To identify prime factors

• To list all factors

Which of the following are the prime numbers of 55?

• 7 and 13

• 5 and 11

• 1 and 55

• 2 and 3