Uploaded October 2025 | Updated September 2026, 2 weeks ago

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This math hack helps you calculate squaring numbers that end in 5

🔢 Step-by-Step Examples

25²

Take the number before 5 → 2

Multiply it by the next number → 2 × 3 = 6

Then add 25 at the end → 625

✅ 25² = 625

35²

Number before 5 → 3

Multiply 3 × 4 = 12

Then add 25 → 1225

✅ 35² = 1225

65²

Number before 5 → 6

Multiply 6 × 7 = 42

Add 25 → 4225

✅ 65² = 4225

105²

Number before 5 → 10

Multiply 10 × 11 = 110

Add 25 → 11025

✅ 105² = 11025