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Revision Notes

Fun with Numbers (Numbers 21 to 99)

CBSE · Class 1 · Mathematics

Quick revision notes for Fun with Numbers (Numbers 21 to 99) — CBSE Class 1 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

45 questions60 flashcards5 concepts

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Key Topics to Revise

1

Numbers in Tens

  • A box can hold 10 oranges.
  • Grouping objects into tens makes counting easier.
  • Tens help in reading and writing bigger numbers.
2

Using Ginladi

  • A ginladi can be used to place number cards in the correct place.
  • Number cards from 1 to 99 can be used with ginladi.
  • Ginladi can help in adding numbers.
3

Numbers 51 to 99

  • Counting activities are given for numbers 51 to 60.
  • Counting activities are given for numbers 81 to 100.
  • Mirrors are used in a house design activity to count numbers from 51 to 99.
4

Picture and Activity Questions

  • Some questions ask children to observe a picture carefully.
  • Children count houses, people, and tree leaves in the picture.
  • A special name is asked for a kind of painting.

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Full Notes

Key Concepts

Each box can hold 10 orangesGinladi is a tool usedNumber cards from 1 to 50Numbers can be counted backwards fromCounting activities are given for numbers

Frequently Asked Questions

What are the important topics in Fun with Numbers (Numbers 21 to 99) for CBSE Class 1 Mathematics?
Fun with Numbers (Numbers 21 to 99) covers several key topics that are frequently asked in CBSE Class 1 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Fun with Numbers (Numbers 21 to 99) — CBSE Class 1 Mathematics?
Understand the core concepts first, then work through the 45 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Fun with Numbers (Numbers 21 to 99)

All 13 chapters — CBSE Class 1 Mathematics Revision Notes

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