Revision
ICSE · Class 5 · Mathematics
Quick revision notes for Revision — ICSE Class 5 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
Understanding Large Numbers
- The Indian number system uses commas after every two digits from the right, starting after hundreds.
- Place values: Ones, Tens, Hundreds, Thousands, Ten Thousands, Lakhs, Ten Lakhs.
- 10 lakhs = 10,00,000, which is the smallest 7-digit number.
Place Value and Face Value
- Place value depends on the position of a digit in a number.
- Face value is simply the digit itself.
- Example: In 37,48,291, the digit 7 has face value 7 but place value 7,00,000 (7 lakhs).
Expanded and Compact Form
- Expanded form breaks a number into the sum of the values of each digit.
- Compact form is the standard way of writing a number using digits.
- Used to understand the contribution of each digit in a number.
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