138 squared

138² = 138 × 138 = 19,044

To square a number, multiply it by itself. 138 squared is written 138² or 138^2, and the answer is 19,044.

How to work out 138 squared

Direct: 138 × 138 = 19,044.
From the previous square: 137² = 18,769, and 138² = 18,769 + (2 × 138 − 1) = 18,769 + 275 = 19,044.
Split the number: 138 = 130 + 8, so 138² = 130² + 2 × 130 × 8 + 8² = 16,900 + 2,080 + 64 = 19,044.

Related

138 cubed = 2,628,072
The square root of 19,044 is 138, so 19,044 is a perfect square.

Squares near 138

Number	Squared
134	17,956
135	18,225
136	18,496
137	18,769
139	19,321
140	19,600
141	19,881
142	20,164

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