Final answer:
Numerals in a number serve two purposes: to denote quantity and position, and to determine the value and magnitude of the number.
Step-by-step explanation:
Numerals or digits play two important roles in any number:
- Denote quantity and position: Numerals represent the quantity or value of the digits in a number. Each digit has a specific place value that determines its position and contributes to the overall value of the number. For example, in the number 456, the digit '4' represents four hundreds, the digit '5' represents five tens, and the digit '6' represents six ones.
- Determine value and magnitude: Numerals determine the value and magnitude of a number. By arranging the digits in a specific order, numerals create distinct numbers with different values. For instance, changing the position of the digit '2' in the number 245 can result in a completely different value, such as 425.