Basic Numeracy: Number Systems and HCF/LCM Number Systems A number system is a system of names or symbols used to represent and compare quantities. The m...
A number system is a system of names or symbols used to represent and compare quantities. The most common number systems are the decimal, binary, and hexadecimal number systems.
Decimal: The most commonly used number system, where we use digits (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) to represent quantities.
Binary: A system of numbers that uses only two symbols, 0 and 1.
Hexadecimal: A system of numbers that uses letters (A, B, C, D, E, and F) to represent quantities.
The greatest common factor (GCF) and least common multiple (LCM) of two numbers are two numbers that have the highest possible common factor and the smallest possible multiple common multiple, respectively.
For example, the GCF of 12 and 18 is 6, and the LCM of 12 and 18 is 36.
The GCF of two numbers is the largest number that divides both numbers without leaving a remainder, and the LCM is the smallest number that is divisible by both numbers without leaving a remainder.
Here are some examples of how to find the GCF and LCM of two numbers:
GCF(12, 18) = 6
LCM(12, 18) = 36