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Warmup

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Is 3.121212…rational or irrational? (guess if you don’t know)

3.1: Rational and Irrational Numbers

LEQ: What is the difference between rational and irrational numbers and how do you graph them on a number line?

Ex.

Real numbers can be separated into either rationals or irrationals.

REAL NUMBERS

Rationalsor Irrationals

A rational number is

any number that can be

expressed as a fraction.

An irrational number is any number with a nonrepeating and neverending decimal

RationalIrrational

-1, 3.5, -1.1111333242315…., π, -13, 20, 1.13131313…, 9.9834298023…,

RationalIrrational

Ex) √16=___

Ex) √36=___

Ex) √81=___

(what does your calculator say?)

- 4/72) √33) .33333…
4) -65) √6.256) π

-2/3, -√2, 1.444…, π, .25, 1/3, √10

7.) -.75___3/48) 3/8___.374

9.) 5/3___1.666…10) -10+6___4(2)(-3)