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All questions of Number Names for Class 5 Exam

What is the number name for 45?
  • a)
    Fifty-four
  • b)
    Forty-five
  • c)
    Forty-four
  • d)
    Fifty-five
Correct answer is option 'B'. Can you explain this answer?

Pallabi Ahuja answered
Understanding Number Names
Number names are the words used to represent numbers. They help us communicate quantities without using numerals. For instance, the number name for 45 is "Forty-five."
Analyzing the Options
Let's look at the given options for the number 45:
  • a) Fifty-four - This represents the number 54, which is incorrect.
  • b) Forty-five - This correctly represents the number 45.
  • c) Forty-four - This stands for 44, which is also incorrect.
  • d) Fifty-five - This indicates 55, making it incorrect as well.


Breaking Down the Correct Answer
- The number 45 consists of two digits: 4 and 5.
- The digit 4 is in the tens place, which means it represents "forty."
- The digit 5 is in the units place, representing "five."
- Combining these gives us "Forty-five."
Conclusion
Therefore, the correct number name for 45 is indeed option b) Forty-five. Understanding and using number names is essential in mathematics, as it enhances clarity in communication about numbers.

Identify the correct number name for 90.
  • a)
    Ninety
  • b)
    Nineteen
  • c)
    Ninety-nine
  • d)
    Nine hundred
Correct answer is option 'A'. Can you explain this answer?

Anjali Nambiar answered
Understanding Number Names
Number names are the words used to represent numbers. They allow us to express numerical values in written form. For the number 90, we need to identify its correct name from the given options.
Options Analysis
Let's examine the options provided:
  • a) Ninety
  • b) Nineteen
  • c) Ninety-nine
  • d) Nine hundred


Correct Answer Explanation
- The number 90 is represented as Ninety in words.
- The term Nineteen refers to the number 19, which is incorrect.
- Ninety-nine indicates the number 99, thus not applicable.
- Nine hundred corresponds to 900, which also does not match.
Therefore, the only suitable option is a) Ninety.
Conclusion
In summary, when asked for the number name of 90, the correct answer is clearly Ninety. This understanding is essential for numerical literacy and helps in everyday communication.

What is the number name for 508?
  • a)
    Five hundred eight
  • b)
    Fifty-eight
  • c)
    Five hundred eighty
  • d)
    Five hundred eighteen
Correct answer is option 'A'. Can you explain this answer?

Sravya Patel answered
Understanding the Number Name for 508
When it comes to naming numbers, it's essential to break down the digits and understand their place values. The number 508 consists of three digits: 5, 0, and 8.
Breaking Down the Digits
- The first digit (5) is in the hundreds place. This means it represents five hundred.
- The second digit (0) is in the tens place. A 0 indicates that there are no tens in this number.
- The third digit (8) is in the units (or ones) place. This means it represents eight.
Constructing the Number Name
To construct the number name for 508, we combine the values of each digit:
- Start with the hundreds: Five hundred
- Next, add the tens: (zero tens, which we don’t say)
- Finally, include the units: eight
So, when we put it all together, we say "Five hundred eight."
Why Other Options Are Incorrect
- Fifty-eight: This represents the number 58, not 508.
- Five hundred eighty: This represents the number 580, which is not correct either.
- Five hundred eighteen: This represents the number 518, which is also incorrect.
Conclusion
Thus, the correct number name for 508 is "Five hundred eight," confirming that option A is indeed correct.

Which of these is the correct number name for 999?
  • a)
    Nine hundred ninety-nine
  • b)
    Nine hundred ninety
  • c)
    Nine hundred nine
  • d)
    Nine thousand ninety-nine
Correct answer is option 'A'. Can you explain this answer?

Milind ghosh answered
Understanding the Number Name for 999
When converting numbers into words, it’s important to break down the number into its place values. The number 999 can be analyzed as follows:
Place Value Breakdown
- Hundreds Place: The first digit is 9, which represents 900.
- Tens Place: The second digit is also 9, which represents 90.
- Units Place: The last digit is 9, which represents 9.
Adding these values together gives us:
- 900 (from the hundreds place)
- 90 (from the tens place)
- 9 (from the units place)
When you combine these values in word form, you get "Nine hundred ninety-nine."
Explaining the Answer Options
- Option A: Nine hundred ninety-nine - This is the correct answer. It accurately represents the number 999.
- Option B: Nine hundred ninety - This only accounts for the hundreds and tens place, missing the units place (9).
- Option C: Nine hundred nine - This only includes the hundreds and units place, completely ignoring the tens place (90).
- Option D: Nine thousand ninety-nine - This is incorrect because it represents the number 9099, which is much larger than 999.
Conclusion
Thus, the correct number name for 999 is indeed option A: Nine hundred ninety-nine. This breakdown of the number into its components helps clarify why this option is the only accurate representation.

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