Subtraction
ICSE · Class 4 · Mathematics
Quick revision notes for Subtraction — ICSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
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Key Topics to Revise
Understanding Subtraction
- Subtraction means taking away one number from another.
- The number we subtract from is called the minuend.
- The number being subtracted is called the subtrahend.
Subtraction of Large Numbers
- We subtract large numbers column by column — starting from the ones place.
- If a digit in the minuend is smaller than the subtrahend digit, we borrow from the next higher place.
- Borrowing means taking 1 from the next left digit and adding 10 to the current digit.
Word Problems on Subtraction
- Word problems help us apply subtraction to real-life situations.
- Look for keywords like 'left', 'remaining', 'less than', 'how many more', 'difference'.
- Always write what is given and what needs to be found.
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