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Chapter 7 of 14
Revision Notes

The Cleanest Village

CBSE · Class 4 · Mathematics

Quick revision notes for The Cleanest Village — CBSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

45 questions20 flashcards5 concepts

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Key Topics to Revise

1

Addition with Regrouping

  • Addition is used to find the total when combining two or more quantities
  • When adding, always start from the ones place, then tens, then hundreds
  • Regrouping means converting 10 ones to 1 ten, 10 tens to 1 hundred
2

Subtraction with Regrouping

  • Subtraction is used to find difference, remaining quantity, or how much more/less
  • Start subtraction from ones place, moving left
  • When top digit is smaller than bottom digit, regroup from the next place value
3

Money Problems and Calculations

  • Money problems involve calculating costs, payments, and balance
  • Balance = Amount Paid - Cost of items
  • Total cost = Sum of individual item costs
4

Word Problems and Problem Solving

  • Read the problem carefully and identify what is being asked
  • Look for key information: numbers, units, what needs to be found
  • Decide whether to add or subtract based on the situation

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Full Notes

Key Concepts

When adding numbersWhen subtractingUsing addition and subtraction to solveReading and understanding problemsMaking reasonable guesses about answers before

Frequently Asked Questions

What are the important topics in The Cleanest Village for CBSE Class 4 Mathematics?
The Cleanest Village covers several key topics that are frequently asked in CBSE Class 4 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in The Cleanest Village — CBSE Class 4 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.

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