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Chapter Summary

Fun with Numbers (Numbers 21 to 99) — Chapter Summary

CBSE · Class 1 · Mathematics

Summary of Fun with Numbers (Numbers 21 to 99) for CBSE Class 1 Mathematics. Part of the CBSE Class 1 Mathematics syllabus.

45 questions60 flashcards5 concepts

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Overview

Numbers from 21 to 99 are explored by counting, grouping, placing number cards, and using tools like ginladi. Tens are used to help count larger numbers. Some activities use oranges in boxes of 10, mirrors on a house, a matchbox with many items, and a slide-ladder game with missing numbers.

Key Concepts

Each box can hold 10 oranges

Each box can hold 10 oranges. Grouping objects in tens helps in counting larger numbers easily.

Ginladi is a tool used

Ginladi is a tool used to place number cards in order. It can help with numbers from 1 to 99, and it can also be used to add numbers and find numbers

Number cards from 1 to 50

Number cards from 1 to 50 can be placed on the ginladi. Tens frames are used to show numbers in this range.

Numbers can be counted backwards from

Numbers can be counted backwards from any given number using a ginladi or a number line. Later, this can be done without the tool.

Counting activities are given for numbers

Counting activities are given for numbers 51 to 60 and 81 to 100. Mirrors on a house are used as a counting activity for this range.

Learning Objectives

  • Count and write numbers from 21 to 99.
  • Understand grouping in tens using boxes and number frames.
  • Place number cards in the correct position on a ginladi.
  • Count backwards from a given number using a number line or ginladi.
  • Use counting activities to find numbers in real situations.

Frequently Asked Questions

What are the important topics in Fun with Numbers (Numbers 21 to 99) for CBSE Class 1 Mathematics?
Key topics in Fun with Numbers (Numbers 21 to 99) include Numbers in Tens, Using Ginladi, Numbers 51 to 99, Picture and Activity Questions. Study these first, then practise questions on each for Class 1 exams.
How should I revise Fun with Numbers (Numbers 21 to 99) for Class 1 exams?
Learn the core ideas first, then work through the 45 practice questions on Fun with Numbers (Numbers 21 to 99). Revise 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 CBSE Class 1 Mathematics Chapter Summary

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