Which is 9. So 9 is a square number. Here are some other examples of square numbers. Can you see how all these numbers can be arranged into a square? Which is 64. So 64 is a cube number.

When multiplying x, we don't use the multiplication symbol. Put the number in front of x: 3x, 4x, 5x ... Image caption, When multiplying x by itself (called squaring), we use the squared symbol (a ...