Mathematics
High School (9–10)
General
Number Systems › Rational and Irrational NumbersNumber Systems › Exponents and RadicalsChapter 1Number Systems
You have counted with 1, 2, 3, and you have used fractions and decimals. Are there numbers that are neither? Yes. The length of the diagonal of a square with a side of 1 is one of them, and no fraction can write it. In this chapter we sort the numbers into families, we meet the irrational numbers, and we place every real number on the number line. Then we learn how to add, multiply and rationalise them, and how to work with fractional powers. We use Python to see the digits.
Part of Mathematics · High School (9–10) (chapter 1)
Following adds this path to your dashboard and enrolls you in the 2 courses you can open, so you can start right away.
Courses in This Path (2)
1.Not started2.Not started
Rational and Irrational Numbers
A fraction can be written as a decimal that ends or repeats. Some numbers do not do either. In this course we learn to tell the two kinds apart, and we find irrational numbers such as the square root of 2 on the number line.
Real Numbers: Operations and Exponents
What happens when you add or multiply an irrational number? How do you remove a square root from the bottom of a fraction? Here we learn the rules, we rationalise denominators, and we use the laws of exponents with fractional powers.