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Published byLawrence Brice Hill Modified over 9 years ago
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Warm-up #8Ch 2 Write in order least to greatest 1) 4, -6, 31, 0, -9 2) 14, 0, -4, -1, 3 =<> Replace each with =, 3) -5 -1 4) 0 -7 5.) Evaluate 12 - -3
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Answers to WU #8 1.-9,-6, 0,4,31 2.-4,-1,0,3,14 3. < 4. > 5.9
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2.2 Rational Numbers Objectives: 1.To show that a number is a rational # 2.To graph rational #’s 3.To compare rational #’s using
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Classes of Numbers
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Rational Numbers Comes from the word “ratio” Any number that can be expressed as the ratio of two integers
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Write the following number as a ratio of two integers: 7
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Write the following number as a ratio of two integers: 0.7
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Any terminating or repeating decimal can be written as a fraction It there is 1 decimal place drop the decimal and put the number over 10 2 decimal places drop the decimal and put over 100 3 decimal places drop the decimal and put over 1000 ****Remember to REDUCE*******
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Write the following number as a ratio of two integers: 4.5
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Write the following number as a ratio of two integers: -9.2
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Negative Rational Numbers “Negative three-fourths”
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Graphing Fractions on the # line Turn improper fractions to mix numbers Find the 2 whole numbers the fraction is in between and put a dot between those two whole numbers
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Graph on the Number Line 042-6-4-2 6
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Graph on the Number Line 042-6-4-2 6
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Comparing Decimals Compare each place value
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Comparing Rational Numbers Using “ ” 1.38 1.83 <
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Comparing Rational Numbers Using “ ” >
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Comparing Rational Numbers Using “ ” Cross multiply and compare their products
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Assignment: Page 61 (2-38) even
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042-6-4-2 6
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