Numbers 1
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Real Numbers (R)
are all numbers which lie along a continuous line.
Natural Numbers (N)
are whole positive numbers.
Factors of a Natural Number
are natural numbers that divide into the number with no remainder.
6: (2)(3)(6)(1)
12: (2)(6)(3)(4)(12)(1)
Multiples of a Natural Number
are numbers that the natural number divides into with no remainder.
6: 12,18,24
12: 24,36,48
Highest Common Factor
of two natural numbers is the largest natural number that divides evenly into both numbers.
20,35 HCF: 5
Lowest Common Multiple
of two numbers is the smallest multiple that both numbers share.
5,7 LCM: 35
Prime Numbers
are natural numbers that have only two factors.
2,3,5,7,11…
Please note that 2 is the only even prime number.
Composite Numbers
are natural numbers that are not prime numbers.
4,6,8,9,10…