89 squared

89² = 89 × 89 = 7,921

To square a number, multiply it by itself. 89 squared is written 89² or 89^2, and the answer is 7,921.

How to work out 89 squared

Direct: 89 × 89 = 7,921.
From the previous square: 88² = 7,744, and 89² = 7,744 + (2 × 89 − 1) = 7,744 + 177 = 7,921.
Split the number: 89 = 80 + 9, so 89² = 80² + 2 × 80 × 9 + 9² = 6,400 + 1,440 + 81 = 7,921.

Related

89 cubed = 704,969
The square root of 7,921 is 89, so 7,921 is a perfect square.

Squares near 89

Number	Squared
85	7,225
86	7,396
87	7,569
88	7,744
90	8,100
91	8,281
92	8,464
93	8,649

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