Lessons for 8.NS.A.1
Sorting a number into its setsDeciding whether a number is whole, an integer, rational or irrational.Lesson
Converting between fractions and decimalsDividing the top by the bottom.Lesson
Irrational and real numbersNumbers that are not fractions, and the complete number line they fill in.Lesson
The real number lineEvery point on the line is a real number; rationals and irrationals fill it together.Lesson
Terminating and repeating decimalsA line drawn above the digits that repeat forever.Lesson
Turning a repeating decimal into a fractionMultiply a repeating decimal by a power of ten and subtract to cancel the repeating tail, leaving a fraction.Lesson
Irrational numbersWhy the square root of 2 cannot be a fraction.Lesson
What makes a number rationalA number that can be written as one integer divided by another.Lesson
Which fractions give terminating decimalsA fraction in lowest terms stops exactly when its denominator has only twos and fives as prime factors.Lesson
Printable Worksheets
Sorting a number into its sets worksheet (PDF)Printable worksheet with answer keyPreview
Converting between fractions and decimals worksheet (PDF)Printable worksheet with answer keyPreview
The real number line worksheet (PDF)Printable worksheet with answer keyPreview
Terminating and repeating decimals worksheet (PDF)Printable worksheet with answer keyPreview
Turning a repeating decimal into a fraction worksheet (PDF)Printable worksheet with answer keyPreview
Irrational numbers worksheet (PDF)Printable worksheet with answer keyPreview
What makes a number rational worksheet (PDF)Printable worksheet with answer keyPreview
Which fractions give terminating decimals worksheet (PDF)Printable worksheet with answer keyPreview