2 1 Rational Numbers Include in your notes

2. 1 Rational Numbers

Include in your notes: rational number A number that can be expressed as the ratio of two integers, , where b 0. A number that can be expressed as a fraction. (No decimals or fractions in the numerator or denominator)

The following videos will describe rational numbe You will also learn about irrational numbers. You can simply watch and listen to the videos. Your notes will later contain the Venn Diagrams of number sets and the examples.

You do not need to include the Venn Diagram from the next video. Just watch. You DO need to include the next slide’s Venn Diagram of the sets of Real Numbers neatly in

Rational Numbers – What are they?

List all the number sets that each number falls under…. Natural, whole, integer, rational, irrational, and real

Tricks! Shortcuts! Ninths trick…. Elevenths trick…

Quickly, but not memorized…. Ex am pl es : Know any fraction where the denominator is ea Converted into 10, 100 or 1000. Convert mental

End here

Are natural numbers integers? Are whole numbers rational? Are integers whole numbers? Are natural numbers real numbers? Are whole numbers imaginary? Rational Numbers ½, -½, 7¾, 4. 9, -6. 27 Integers. . . -3, -2, -1, 0, 1, 2, 3, . . . Whole 0, 1, 2, 3 Natural 1, 2, 3, . . .

Imaginary Numbers Complex Numbers Real Numbers Rational Numbers ½, -½, 7¾, 4. 9, -6. 27 Integers. . . -3, -2, -1, 0, 1, 2, 3 Whole 0, 1, 2, 3, … Natural 1, 2, 3, . . . Irrational