Class 3 Maths - RAJASTHAN
House of Hundreds – I
The chapter House of Hundreds – I in Class 3 Mathematics introduces students to three-digit numbers, helping them step beyond the numbers 1 to 99. Students learn how to group objects in tens and hundreds, read and write numbers up to 999, understand place value, and expand numbers based on hundreds, tens, and units. This foundational chapter is crucial for the Rajasthan (RBSE) board exams as it builds the base for advanced arithmetic operations like addition and subtraction in higher classes. Mastering this chapter ensures students develop strong number sense and calculation skills required for school tests.
Start Learning FreeKey Concepts
Understanding Hundreds
When we group 10 tens together, we get 1 hundred, which is written as 100 and is the smallest 3-digit number.
Place Value of 3-Digit Numbers
In a 3-digit number, digits take positions from right to left as Ones, Tens, and Hundreds, determining their actual value.
Expanded Form
Breaking down a 3-digit number into the sum of its hundreds, tens, and ones (for example, 345 = 300 + 40 + 5).
Number Names
Reading and writing 3-digit numbers in words using correct place value names like hundred, fifty, etc.
Counting in Hundreds
Counting forward in steps of 100s up to 999 to understand the sequence of large numbers.
Important Formulas
Board Exam Info
In Rajasthan (RBSE) Class 3 Mathematics exams, this chapter typically carries around 6 to 8 marks. Common question types include writing numbers in words, writing numbers in expanded form, identifying the place value of a underlined digit in a 3-digit number, and filling in missing numbers in sequences.
Frequently Asked Questions
What comes after 99?
After 99 comes 100, which is the first 3-digit number and is called one hundred.
How do we write the place value of a digit in a 3-digit number?
We multiply the digit by its position value. For example, the place value of 5 in 352 is 50 because it is in the tens place.
What is the difference between number and number name?
A number is written in digits (like 425) while a number name is written in words (like Four hundred twenty-five).
Learn House of Hundreds – I with Your AI Tutor
10 different ways to study this chapter. Free for 3 chapters per day.
Lecture
Key Points
Interactive
Quiz
Flashcards