Short cut Trick to find the square of number between 30 & 40.
Short cut Trick to find the square of number between 30 & 40.
Short cut Trick to find the square of number between 30 & 40.
Eg: 332 = (30 + 3)2
= 302 + (60 x 3) + 32
= 900 + 180 + 9
= 1,089
Eg: 392 = (30 + 9)2
= 302 + (60 x 9) + 92
= 900 + 540 + 81
= 1,521
Eg: 372 = (30 + 7)2
= 302 + (60 x 7) + 72
= 900 + 420 + 49
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