This is the Number Line: If a number has no sign it usually means that it is a positive number. Example: 5 is really +5.| Math is Fun
I want to take you on an adventure ... ... ... an adventure through the world of numbers. ... Let us start at the beginning| www.mathsisfun.com
A Rational Number can be made by dividing an integer by an integer. (An integer itself has no fractional part.).| Math is Fun
First learn about Squares, then Square Roots are easy. ... Squared is often written as a little 2 like this ... This says 4 Squared equals 16 (the little 2 says the number appears| www.mathsisfun.com