Question 1

What are factors and how do I find them?

Accepted Answer

Factors are numbers that divide exactly into another number without leaving a remainder. To find the factors of a number, start by dividing the number by the smallest prime number, which is 2, and continue with other primes like 3, 5, 7, etc., until you reach the number itself. For example, the factors of 12 are 1, 2, 3, 4, 6, and 12.

Question 2

How are multiples different from factors?

Accepted Answer

Multiples of a number are obtained by multiplying the number by integers. Unlike factors, which are limited, multiples are infinite. For example, the multiples of 3 include 3, 6, 9, 12, and so on. Understanding the difference is crucial in Edexcel Lower Secondary Mathematics as it helps in solving problems related to number patterns and sequences.

Question 3

What is the greatest common factor (GCF) and how do I calculate it?

Accepted Answer

The greatest common factor (GCF) is the largest number that is a factor of two or more numbers. To find the GCF, list all the factors of each number and identify the largest factor that appears in each list. For example, for 8 and 12, the factors are 1, 2, 4, 8 and 1, 2, 3, 4, 6, 12, respectively. The GCF is 4.

Question 4

What is the least common multiple (LCM) and why is it important?

Accepted Answer

The least common multiple (LCM) of two or more numbers is the smallest multiple that is exactly divisible by each of the numbers. It is important in solving problems involving addition and subtraction of fractions with different denominators. To find the LCM, list the multiples of each number and identify the smallest multiple common to each list. For example, the LCM of 4 and 5 is 20.

Question 5

How can understanding factors and multiples help in solving real-world problems?

Accepted Answer

Understanding factors and multiples is essential for solving real-world problems such as optimizing resources, scheduling, and dividing items into equal parts. In the Edexcel Lower Secondary Mathematics curriculum, these concepts help students develop problem-solving skills and understand number relationships, which are applicable in various fields like engineering, computer science, and economics.

Factors and Multiples

Short Notes - Factors and Multiples

Study Notes & Exam Tips

Factors and Multiples — frequently asked questions