Mathematics (2019) Grade(s): 8

MA19.8.2

Locate rational approximations of irrational numbers on a number line, compare their sizes, and estimate the values of the irrational numbers.

Unpacked Content

Knowledge

Students know:
  • the difference between a rational and an irrational number.
  • That real numbers and their decimal expansions can be approximated using a common place value to compare those expansions.

Skills

Students know:the difference between a rational and an irrational number.
  • That real numbers and their decimal expansions can be approximated using a common place value to compare those expansions.
  • Understanding

    Students understand that:
    • an estimation of the value of an irrational number can be used to compare an irrational number to other numbers and to place them on a number line.

    Vocabulary

    • Rational
    • Irrational
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