SME
Grade 8 Math
Square roots, cube roots and irrational numbers
The main lesson, then each kind of problem it solves.
Square roots, cube roots and irrational numbers
Main lesson
Cube roots as edges
Use this for “A cube has volume 1,000 cm³. What is its edge?”
A repeating decimal as a fraction
Use this for “Write 0.363636… as a fraction.”
Rational or irrational?
Use this for “Which of these numbers are irrational: −11/4, 0.2468, √41, −√81?”
Does the decimal end or repeat?
Use this for “Which fractions have decimals that end: 3/8, 1/3, 7/20?”