In calculations involving more than one arithmetic operation, rounding off to the proper number of significant figures may be done once at the end if all the operations are multiplication and/ or division or if they are all additions and/or subtractions but not if they are combinations of additions or subtractions with multiplications or divisions. Explain

Explanation

To understand the rules for rounding off significant figures in calculations involving multiple arithmetic operations, we need to break down the process into clear steps.

### Step-by-Step Solution:

1. **Identify the Operations**: Determine whether the operations involved in the calculation are all additions and subtractions or all multiplications and divisions. If the operations are mixed (i.e., a combination of addition/subtraction and multiplication/division), you will need to handle rounding differently.

2. **Addition and Subtraction**:
- When performing addition or subtraction, the result should be rounded to the least number of decimal places of any number in the operation.
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