1-3 notes - 1-3 Exploring Real Numbers (are there fake...

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Unformatted text preview: 1-3 Exploring Real Numbers (are there fake numbers?) Natural numbers 1,2,3,....... Whole numbers 0,1,2,3,..... Integers ......-2,-1,0,1,2,3,4,........ Rational Numbers- any number that you can write in the a form b , where a and b are integers and b 0 - - they can be written as decimals (6.27 or repeating 4.33 ) All integers are rational numbers because you can write any integer as a fraction (4 can be written as 4 ) 1 Name the set(s) of numbers to which each given number belongs 1) -13 2) 3.28 3) 13 25 4) 42 Irrational Numbers- cannot be expressed in form b , where a and b are integers - the numbers after the decimal go on forever without any repeating a 5) True or False: All integers are rational numbers. How can we keep all these numbers straight??! Name the set(s) of numbers to which each number belongs 1) -12 2) -4.67 4) 5 Which set of numbers is most reasonable for the cost of a scooter? The number line Opposites- two numbers lie the same distance from zero on a number line in opposite directions. Absolute Value Distance from 0 on the number line (always positive). 1) 5 2) - 4 3) - 3.7 4) 5 7 5) Simplify this expression x-x + x Comparing numbers on the number line Inequality a mathematical sentence that compares the value of two things. Insert the correct symbol to make the sentence true: 1) 5 - 10 2) 3-5 -1 3) 16 20 4 - 5 4) 3 8 1 2 Write an inequality for each phrase 5) The cost of an iPod plus the cost of a new car is more than what I make in a year. 6) Hannah needs at least five people to help her move. 7) No more than 35 people can be in this class. Quiz Tomorrow! Homework #3 p 21 (1-10, 14-20, 24-27, 50-62) ...
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1-3 notes - 1-3 Exploring Real Numbers (are there fake...

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