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How do rational numbers affect our lives!. Adrianna G., Jesus C., Jennifer T. What are rational numbers?. Definition – a number that can be expressed as an integer or the quotient of two integers - PowerPoint PPT Presentation
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How do rational numbers affect
our lives!Adrianna G., Jesus C., Jennifer T.
What are rational numbers?
Definition – a number that can be expressed as an integer or the quotient of two integers
This means that any number we can make into a fraction can be a rational number, this includes negative number, negative fractions, and negative decimals.
What are rational numbers?
Examples - Rational Number
http://www.glencoe.com
Other examples -
Rational numbers include all the positive integers, all the negative integers and zero.
€
34,0.75,75%
€
€
13,0.33,33
13%
How do we use rational numbers
everyday?Shopping
Time
Money
Temperature
Height
Weight
Shopping & Money
Math at the Mall
http://mathplayground.com/mathatthemall1.html
Height & weightSpurs Roster
2010-11 Roster
NUM PLAYER POS HT WT DOB FROM YRS
45 DeJuan Blair F-C 6-7 265 04/22/1989 Pittsburgh 1
10 Keith Bogans (FA) G-F 6-5 215 05/12/1980 Kentucky 7
15 Matt Bonner (FA) F-C 6-10 240 04/05/1980 Florida 6
21 Tim Duncan F 6-11 260 04/25/1976 Wake Forest 13
http://www.nba.com/spurs/roster/
Time & Temperture
Telling Timehttp://www.create-a-reader.com/Components/CARPage.swf?site=basic&lang=English&page=Activities
http://www.clker.com/clipart-10729.html
The math behind rational numbers!
Converting from fractions to decimals to percents
Finding equivalent fractions, decimals, and percents
Comparing and ordering
How to convert fractions to
decimalsTo convert a fraction to a decimal , you have to divide the numerator (top number) by the denominator (bottom number) , this means the top number goes under the division symbol and the bottom number goes outside the division symbol.
Example ¾ - the 3 is the numerator (top number) and the 4 is the denominator (bottom number)
How to convert fractions to
decimals continued
€
4 3.00302802202000
0.75)
How to convert decimals to
percentsTo convert a decimal to a percent, multiply the decimal by 100, or move the decimal two places to the right and add the percent sign.
€
0.75 • 100 = 75%
How to find equivalent fractionsThe easy way to make equivalent
fractions is to multiply the numerator and denominator by the same number
Equivalent Fractions
http://www.shodor.org/interactivate/activities/EquivFractionFinder/
Compare and Order
Comparing and Ordering Rational Numbers