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Published byThomasine Rogers Modified over 9 years ago
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Warmup: Order the three numbers from LEAST to GREATEST
-0.5, , 7/10, 1/3
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Homework Answers 1.) varies 12.) > 3.) Varies 13.) = 4.) ) -2/3,-3/5,-7/8 5.) ) 7/10,6/8,4/5 6.) .333…. 17.) < 7.) ) < 8.) .777… 21.) > 9.) -3,-2.6,0,1/4, ) > 10.> 25.) < 11. < 27.) >
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3.2 Adding and Subtracting Rational Numbers
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Why would we need to be able to add fractions?
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1 ) You get paid time and a half for overtime _____________
2) The mortgage rate is % 3) The size of the roll of material was
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What are the parts of a fraction?
Top number= Bottom number= Bar is a symbol for _________
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How do we add fractions? 1.) Find a common denominator if necessary 2.) add together tops ONLY: bottom stays the same 3.) Reduce your fraction if possible
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a.) 2/3 + 5/3= b.) 2/6+9/12 c.) 4/5 + 1/2
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Ex. A cookie recipe calls for 5/6 cups of sugar
Ex. A cookie recipe calls for 5/6 cups of sugar. All you have is a ½ measuring cup and a 1/3 measuring cup. Can you make it work? How?
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Mixed numbers are different…
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Subtracting Fractions
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Hwk: p : 3-9, 11-25, 36
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Clothesline Activity
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