Math
Knowledge of Numbers - Reading and writing numbers up to five digits
MCQ

Introduction

A five-digit number is formed when we reach beyond 9,999. By adding 1 to the largest four-digit number (9,999), we get 10,000 (Ten Thousand), which is the smallest five-digit number.

Explanation Step by Step

Every digit in a five-digit number has a specific position. Understanding these positions is key to mastering number knowledge.

Visual representation of place values: T-Th, Th, H, T, U
Place NameTen-Thousands (T.Th)Thousands (Th)Hundreds (H)Tens (T)Units (U)
Value10,0001,000100101

Sub-topics

Reading and writing numbers up to five digits

To read a five-digit number, we read the digits in the Ten-thousands and Thousands places together as a single number of thousands.

Examples

Example 1: Writing in words
Number: 32,405
Grouping: 32 Thousands + 4 Hundreds + 0 Tens + 5 Units
Result: Thirty-two thousand four hundred and five.
Example 2: Writing in figures
Words: Ninety thousand two hundred sixteen
Placement: T-Th: 9, Th: 0, H: 2, T: 1, U: 6
Result: 90,216

Tricks and Shortcuts

The Period Rule: Always place a comma after the first three digits from the right. The digits to the left of the comma represent the "Thousands" family. Example: 56,789 is Fifty-six Thousand...

Common Mistakes

When there is a zero in the middle of a number (like 50,230), students often forget to account for that place. Ensure you don't say "Five thousand" for a five-digit number starting with 5.

Practice Questions

Easy Questions

  1. Read and write in words: 11,000
  2. Write the number: Twenty-five thousand three hundred.
  3. What is the value of 5 in 54,321?

Medium Questions

  1. Write the expanded form of 67,890.
  2. Form the greatest five-digit number using 3, 8, 1, 9, 4.
  3. Identify the digit in the Ten-thousands place in 82,104.

Hard Questions

  1. What is the difference between 10,000 and 9,999?
  2. Write a five-digit number that has 0 in the hundreds and units place.
  3. Write the predecessor (number before) and successor (number after) of 99,999.

Revision Summary

Five-digit numbers consist of places up to Ten-thousands. Always use commas for clarity and remember that 10,000 is the smallest and 99,999 is the largest five-digit number.

What is the smallest five digit number that can be formed from 7, 0, 4, 2, 5?
A
02,457
B
20,457
C
24,570
D
75,420
Explanation
Zero does not come first when making small numbers, so take the number greater than zero (2) first and then take the zero.
Correct 33 Wrong 30