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INTERMEDIATEFormula Shortcuts
Square Any Two-Digit Number
Use (a+b)² formula to square any two-digit number mentally
SSCCATIBPS
Split the number into tens (a) and units (b)
Formula
(a + b)² = a² + 2ab + b²How It Works
0
Square the tens digit and multiply by 100
1
Multiply tens × units × 2 × 10
2
Square the units digit
3
Add all three parts
Examples
📝 37² = 30² + 2×30×7 + 7² = 900 + 420 + 49 = 1369
📝 64² = 60² + 2×60×4 + 4² = 3600 + 480 + 16 = 4096
Pro Tips
💡 Practice with easy numbers first: 12², 23², 34²
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