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🧮

Subtraction

· Formula

🧮 Formula Reference Sheet

Difference: a − b
Not commutative: a − b ≠ b − a
Identity: a − 0 = a
Borrow: 52 − 28 → 2−8 borrow → 12−8=4, 4−2=2 → 24

⚡ Example per formula

Difference: a − b

↳52 − 28 = 24

Not commutative: a − b ≠ b − a

↳5 − 3 = 2; 3 − 5 = −2

Identity: a − 0 = a

↳47 − 0 = 47

Borrow: 52 − 28 → 2−8 borrow → 12−8=4, 4−2=2 → 24

↳52 − 28 → borrow → 12−8=4, 4−2=2 → 24

✏️ Worked Example

52 − 28 = ?

👁 Show step-by-step solution

2 − 8: borrow → 12 − 8 = 4. 4 − 2 = 2. → 24

✅ Answer: 24

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