Pre-Algebra Unit 1

square roots, cube roots, rational and irrational numbers and equations

What are rational numbers?

Rational numbers are numbers that can be expressed as a fraction, where the numerator and denominator are integers and the denominator is not zero. They can terminate(end) or repeat the same pattern.

What are irrational numbers?

Irrational numbers are numbers that cannot be expressed as a fraction of two integers, meaning their decimal representation is non-repeating and non-terminating.They cannot be written as a simple fraction. They go on forever without a pattern.

what happens when you do a square root times itself? √4x√4, √111x√111

Answer:4,111

what is a square root?

A square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 9 is 3, because 3×3=9.

What is a cube root?

A cube root of a number is a value that, when multiplied by itself three times, gives the original number. For example, the cube root of 27 is 3, because 3×3×3=27.