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Syllabus

Addition — Syllabus

ICSE · Class 1 · Mathematics

What Addition covers in ICSE Class 1 Mathematics: 4 topics, for the 2026-27 session. Part of the ICSE Class 1 Mathematics syllabus.

81 questions25 flashcards2 formulas & key relations4 concepts

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4 Topics · ICSE Class 1 Mathematics · 2026-27

Topics in Addition

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.

Key Concepts

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

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Frequently Asked Questions

What are the important topics in Addition for ICSE Class 1 Mathematics?
Key topics in Addition include What is Addition?, Ways to Add Numbers, Adding Using Place Value (Without Carry Over), Adding With Carry Over. Study these first, then practise questions on each for Class 1 exams.
How should I revise Addition for Class 1 exams?
Learn the core ideas first, then work through the 81 practice questions on Addition. 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.

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All ICSE Class 1 Mathematics Syllabus

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