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February 15, 2025 at 06:57 AM
Shortcut: Squaring Any 2-Digit Number in Seconds
✅Step 1: Subtract 25 from the number → This gives the first two digits.
✅Step 2: Subtract 50 from the number → Square this result for the last two digits.
✅Step 3: If there’s a carryover, add it to Step 1’s result.
🔹 Example 1: Square of 51
• 51 - 25 = 26 (First part)
• 51 - 50 = 1, Square of 1 = 01 (Last part)
• Final Answer: 2601
🔹 Example 2: Square of 63
• 63 - 25 = 38
• 63 - 50 = 13, Square of 13 = 169
• Carryover (1) added to 38 → 39
• Final Answer: 3969