Square Number — 10² = 100 — free printable diagram

What is 10 squared?

10 squared is 100. Squaring a number means multiplying it by itself, so 10² = 10 × 10 = 100. Read the other way round, the square root of 100 is 10.

Calculation

10² = 10 × 10

Answer

100

In words

one hundred

Square root

√100 = 10

Position

the 10th square number

• Squaring means multiplying a number by itself, so 10² = 10 × 10 = 100.
• 100 is called a square number because 100 counters can be arranged in a perfect square of 10 rows with 10 in each row.
• The opposite of squaring is taking the square root, so √100 = 10.
• 10 squared is not 10 × 2. 10 × 2 = 20, but 10² = 100.
• Each square number is the odd numbers added up in order: 100 − 81 = 19, so the gap from 81 to 100 is 19.