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Revision Notes

Addition

ICSE · Class 1 · Mathematics

Quick revision notes for Addition — ICSE Class 1 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

81 questions25 flashcards4 concepts

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Key Topics to Revise

1

What is Addition?

  • Addition means combining two or more numbers to get a bigger number.
  • The symbol for addition is '+' (plus).
  • The answer in addition is called the 'sum'.
2

Ways to Add Numbers

  • We can add by counting forward from the first number.
  • Zero added to any number gives the same number.
  • Changing the order of numbers does not change the sum.
3

Adding Using Place Value (Without Carry Over)

  • We can add two-digit numbers by adding ones first, then tens.
  • No carry over means the sum of ones is less than 10.
  • Always write the answer in the correct column (ones or tens).
4

Adding With Carry Over

  • When the sum of ones is 10 or more, we carry over 1 to the tens column.
  • Carry over means moving 1 ten from ones to tens column.
  • We write the extra ones in the ones place and add 1 to the tens.

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Full Notes

Key Concepts

Addition means combining two or moreWe can add numbers by startingWhen adding numbersSometimes

Frequently Asked Questions

What are the important topics in Addition for ICSE Class 1 Mathematics?
Addition covers several key topics that are frequently asked in ICSE 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 Addition — ICSE Class 1 Mathematics?
Understand the core concepts first, then work through the 81 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 Addition

All 13 chapters — ICSE Class 1 Mathematics Revision Notes

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