# Exploring Numbers

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What is a factor of a Number?
A whole number that divides exactly into a number. Factors include 1 and the number itself.
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What is a multiple?
Teh result of multiplying a number by a positive whole number. 15 is a multiple of 5.
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What is a prime number?
A number greater than 1 which has only two factors itself and 1.
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what is a prime factor?
Any factor of a number that is a prime number.
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What is prime factor form?
Writing a number as the product of its prime factors.
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What is the HCF? (Highest Common Factor)
The highest factor of two numbers that is common to both so
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How do i find the HCF?
Write each number in prime factor form. Then pick out the common factors that appear in both and multiply example 12 is the HCF of 720 adn 84
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What is the LCM? (Lowest common multiple)
The lowest number that is a multiple of them both.
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How do I find the LCM?
First look at the prime factor forms of the two numbers. The LCM must contain all the prime factors of both numbers, multiply and get LCM. Example LCM of 8 and 6 is 24.
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What is a square number?
The result of multiplying a whole number by by itself.
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what is a cube number?
The result of multiplying a whole number by itself and then multiplying the number again.
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What is an index? (plural indices)
The power a number is raised to.
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## Other cards in this set

### Card 2

#### Front

What is a multiple?

#### Back

Teh result of multiplying a number by a positive whole number. 15 is a multiple of 5.

### Card 3

#### Front

What is a prime number?

### Card 4

#### Front

what is a prime factor?

### Card 5

#### Front

What is prime factor form?