145 squared

145² = 145 × 145 = 21,025

To square a number, multiply it by itself. 145 squared is written 145² or 145^2, and the answer is 21,025.

How to work out 145 squared

Direct: 145 × 145 = 21,025.
From the previous square: 144² = 20,736, and 145² = 20,736 + (2 × 145 − 1) = 20,736 + 289 = 21,025.
Split the number: 145 = 140 + 5, so 145² = 140² + 2 × 140 × 5 + 5² = 19,600 + 1,400 + 25 = 21,025.

Related

145 cubed = 3,048,625
The square root of 21,025 is 145, so 21,025 is a perfect square.

Squares near 145

Number	Squared
141	19,881
142	20,164
143	20,449
144	20,736
146	21,316
147	21,609
148	21,904
149	22,201

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