Subtraction — Formula Sheet
ICSE · Class 3 · Mathematics
6 formulas from Subtraction (ICSE Class 3 Mathematics) on one page, grouped by topic. Part of the ICSE Class 3 Mathematics syllabus.
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Formulas and Key Relations
Subtraction Without Regrouping
Minuend - Subtrahend = Difference
Subtraction With Regrouping
Borrow 1 from higher place = 10 in current place
Estimation in Subtraction
Estimated Difference = Rounded Minuend – Rounded Subtrahend
Subtraction With Regrouping
The borrowed 1 becomes 10 in the current place (e.g., 1 ten = 10 ones).
1 borrowed = 10 in the current place.
Key relations
For example, if 5 + 3 = 8, then 8 - 3 = 5.
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