# Example

Here's how we square the number $3$:
$\large3^2 = 3 \times 3 = 9$

### Reflection question

What does it mean to square a number?

# Practice

$\large1^2 =$

$1^2 = 1 \times 1 = 1$
$\large2^2 =$

$2^2 = 2 \times 2 = 4$
$\large3^2 =$

$3^2 = 3 \times 3 = 9$
$\large4\times4 =$

$4 \times 4 = 16$
$\large5^2 =$

$5^2 = 5 \times 5 = 25$
$\large6^2 =$

$6^2 = 6 \times 6 = 36$
$\large7^2 =$

$7^2 = 7 \times 7 = 49$
$\large8\times8 =$

$8 \times 8 = 64$
$\large9^2 =$

$9^2 = 9 \times 9 = 81$
$\large10^2 =$

$10^2 = 10 \times 10 = 100$

# Challenge problem

$\large a^2 =$
So, $a^2 = a \times a$.