House of Hundreds - II – Class 3 Maths Chapter 9 Notes & NCERT PDF

Class 3MathematicsChapter 9NCERT book: Maths Mela - Class 3

Notes and a simple summary of Chapter 9 of the NCERT Class 3 Mathematics book, with the official chapter PDF, flashcards, an MCQ quiz and an AI tutor for your doubts.

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Chapter 9: House of Hundreds - II

Introduction

House of Hundreds - II takes children's number sense up to 1000. It opens with a story: Akbar wants to know how many crows fly in his city. Birbal says, "There are exactly Nine Hundred and Sixty Three crows in our city." When Akbar asks what if there are fewer or more, Birbal says the others have gone on a holiday or crows from other places are visiting! The story shows that large numbers like 963 are part of our world, and that estimating is a useful skill.

What's in this Chapter

Showing numbers with tiles: a truck driver shows the number of rice sacks with hundreds, tens and ones tiles. Children draw tiles for 832, 947, 726, 504, 620 and 700.

Number lines: locating 530, 540, 628, 696 and 590 between 500 and 700, and 703, 721, 759, 810, 855 and 887 on a longer line.

Neighbouring numbers: for each number, writing the neighbouring hundreds, fifties and tens. The book's example: 468 lies between 400 and 500, between 450 and 500, and between 460 and 470.

Cranes and food: helping cranes jump along a number line, e.g. from 667 back to 650 or forward to 700, with steps of chosen lengths.

Tambola: filling a grid with numbers between 570 and 630 and striking out numbers that match clues such as "Two more than 610" (612) or "5 less than 625" (620).

Different ways of making a number: 368 = 3 hundreds, 6 tens, 8 ones = 300 + 60 + 8 = 68 more than 300 = 32 less than 400.

Skip and Solve: Teji and Jojo complete number patterns that jump by +10, +100, +25, +30 and +15.

Number puzzles and matching: matching quantities like "number of children in your school" or "stars in the sky" to ranges (0-10 up to more than 1000), and clues such as "I am century + half century" (150).

The Number Detective: special numbers such as twin digits (11, 22, 33), triplet digits (111, 222, 333), numbers that read the same both ways (353, 868) and numbers with zeroes (210, 404, 800).

Paper slips: with 6 slips showing 100, 10 or 1, which numbers can be made? Four 100 slips and two 10 slips make 420.

My Numbers: using the digits 3 and 8 to make 2-digit and 3-digit numbers and arranging them.

Bhutasankhya (Word Numerals): an old Indian way of saying numbers with words, e.g. Moon = 1, Twins = 2, Sapta svara = 7, Tri kala = 3.

Key Ideas

Numbers up to 1000 are made of hundreds, tens and ones.

A number can be written in many ways (place value, more than, less than).

Every number lies between neighbouring hundreds, fifties and tens.

Patterns help us skip count by 10s, 15s, 25s, 30s and 100s.

Activities from the Book

Draw tiles for given numbers and place numbers on number lines.

Play Tambola with number clues.

Make numbers with 6 paper slips and with the digits 3 and 8.

Make word-numeral cards for 15, 27 and 94.

Words to Learn

Hundred (सौ) - ten tens

Thousand (हज़ार) - ten hundreds

Digit (अंक) - one of the symbols 0 to 9

Number line (संख्या रेखा) - a line with numbers marked in order

Neighbouring (पास वाला) - the nearest numbers on either side

Estimate (अनुमान) - a good guess

Pattern (पैटर्न / क्रम) - an order that repeats or grows

Century (शतक) - one hundred

Word numerals (भूतसंख्या) - words used to stand for numbers

Tips for Parents & Teachers

Guess together: how many students are in the school, or how many peanuts in a packet? Then check.

Say a 3-digit number and ask your child to show it with bundles of sticks or play money.

Invent your own word numerals from your language and local objects.

Common Mistakes

Writing three hundred and four as 3004 instead of 304; the zero holds the tens place.

Thinking 504 has 5 tens; it has 5 hundreds, 0 tens and 4 ones.

Counting jumps instead of the size of each jump on a number line.

💡 Key Learning Points

✓Numbers up to 1000 can be shown with hundreds, tens and ones tiles and placed on a number line.
✓Every number lies between neighbouring hundreds, fifties and tens (e.g. 468: 400-500, 450-500, 460-470).
✓The same number can be written in many ways, such as 368 = 300 + 60 + 8 = 400 - 32.
✓Number patterns can grow by 10, 15, 25, 30 or 100.
✓Estimating large quantities, as Birbal did with the crows, is a useful mathematical skill.

👨‍🏫 Teaching Tips

→Tell the Akbar-Birbal crow story and ask children to estimate large quantities around them, as the book's teacher's note suggests.
→Show a 1000 ginladi (bead string) so children feel how large 1000 is.
→Use Dienes blocks or drawn tiles for every new number before writing it.
→Play Tambola with different ranges and clues to practise more than, less than and digit places.
→Let children find different jumps for the cranes and compare 2-jump and 3-jump solutions.
→Encourage children to use local words and languages when making word-numeral cards.
→Ask children to explain their strategies when listing numbers made from 3 and 8.

📋 Assessment Questions

Can the child draw hundreds, tens and ones tiles for a number such as 504?
Can the child write the neighbouring hundreds, fifties and tens for a number like 734?
Can the child write a number in at least three ways (place value, more than, less than)?
Can the child complete a skip-counting pattern such as 850, 875, 900?
Can the child make and order 2-digit and 3-digit numbers using the digits 3 and 8?

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