Class 3 Maths - KARNATAKA
House of Hundreds – I
The chapter 'House of Hundreds – I' introduces Class 3 students to the fascinating world of three-digit numbers. Building on their knowledge of units and tens, learners discover how grouping objects into hundreds helps them count, read, and write numbers up to 999. Through fun activities involving bundle sticks, grid blocks, and place value charts, students understand that 10 tens make one hundred. This foundational chapter is crucial for the Karnataka (KSEEB) board exams as it forms the base for all future arithmetic operations like addition and subtraction with bigger numbers.
Start Learning FreeKey Concepts
Understanding the Hundred
When we collect 10 tens together, we get a new unit called a hundred, written as 100.
Place Value
The value of a digit depends on its position in a number: Ones, Tens, or Hundreds.
Number Names
Learning to read and write three-digit numbers in words, such as 245 being written as 'Two hundred forty-five'.
Expanded Form
Splitting a three-digit number into the sum of its hundreds, tens, and ones (e.g., 356 = 300 + 50 + 6).
Comparing Numbers
Using the hundreds place first, then tens and ones, to find out which of two three-digit numbers is bigger or smaller.
Important Formulas
Board Exam Info
In Karnataka (KSEEB) Class 3 Mathematics exams, this chapter usually carries around 8 to 12 marks. Common question types include writing number names, expanding numbers, identifying place values of underlined digits, and comparing numbers using greater than or less than symbols.
Frequently Asked Questions
What comes after 99?
After 99 comes 100, which is the first three-digit number and the start of the 'House of Hundreds'.
How do we write 405 in expanded form?
405 can be written as 400 + 0 + 5, showing 4 hundreds, 0 tens, and 5 ones.
How do I know which three-digit number is larger?
Always look at the digit in the Hundreds place first. The number with the bigger digit in the hundreds place is larger.
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