### Worksheet

- Addition:

- Addition of two numbers: a + b = c
- Addition of multiple numbers: a + b + c + … = sum of all numbers

Subtraction:

- Subtraction of two numbers: a – b = c

- Multiplication:

- Multiplication of two numbers: a * b = c
- Multiplication of multiple numbers: a * b * c * … = product of all numbers

Division:

- Division of two numbers: a / b = c

- Highest Common Factors (HCF):

- Finding HCF using prime factorization method:
- Express both numbers as a product of prime factors.
- The HCF is the product of common prime factors with the lowest powers.

- Lowest Common Multiples (LCM):

- Finding LCM using prime factorization method:
- Express both numbers as a product of prime factors.
- The LCM is the product of all prime factors with their highest powers.

- Order of Operations and Brackets:

- The order of operations, also known as BODMAS/BEDMAS, is used to perform calculations in a specific sequence:
- Brackets
- Order (exponents and roots)
- Division and multiplication (left to right)
- Addition and subtraction (left to right)

Example of expression evaluation:

a * (b + c) / d – e + f

- Evaluate the expression within brackets first: (b + c)
- Perform the multiplication: a * (b + c)
- Perform the division: (a * (b + c)) / d
- Perform the subtraction: ((a * (b + c)) / d) – e
- Perform the addition: (((a * (b + c)) / d) – e) + f