Number

Question 1

Factors

Answer 1

factors are numbers you can multiply togehter to get another number eg. 2 and 3 are multiples of 6, 2x3=6

Question 2

multiple

Answer 2

The result of multiplying a number by an integer eg. 2, 4 ,6 and 8 are multiples of 2

Question 3

common factor

Answer 3

when you find the factors of two numbers then see the one which are the same in them they are the cmmon factors.

Question 4

lowest common multiple

Answer 4

the smallest number which is a multiple of two or more numbers eg. 15 is the lcm of 5 and 3

Question 5

prime factor decomposition

Answer 5

means writing it as a product of prime factors.
- divide it by the first possible prime number. Divide the product again by the lowest possible prime number, do this again until you reach one. then combine all the prime numbers an times them together ading powers if neccesary

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Question 6

prime number

Answer 6

a number that can be divided by one or itself is whole and greater than one

Question 7

what is a unit fraction

Answer 7

one with a numerator of one

Question 8

inverted cosine rule

Answer 8

A = cos-1 (b2 + c2 - a2) / 2bc