11 squared

11² = 11 × 11 = 121

To square a number, multiply it by itself. 11 squared is written 11² or 11^2, and the answer is 121.

How to work out 11 squared

Direct: 11 × 11 = 121.
From the previous square: 10² = 100, and 11² = 100 + (2 × 11 − 1) = 100 + 21 = 121.
Split the number: 11 = 10 + 1, so 11² = 10² + 2 × 10 × 1 + 1² = 100 + 20 + 1 = 121.

Related

11 cubed = 1,331
The square root of 121 is 11, so 121 is a perfect square.

Squares near 11

Number	Squared
7	49
8	64
9	81
10	100
12	144
13	169
14	196
15	225

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