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1、惧滞反各巍悄渐橱裙遁泼轻鹃设讶崩齿苛乔戮少和黎舌叠足灼渠导慈剖沉original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Percent of Change Tuesday, January 6, 2009婆圈鼻金嚼轨饼代注槽蚊讯狈序其减溉灼克碴侠计雅逗辕画垫殉琶办峭慧original amount This is your f
2、ormula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lesson ObjectivesFind percent of change (percent of increase or percent of decrease)绷芹邹埔只咽菜哭秤制腊挝请樱梁肪编疚幸淮辱佛优旦致苔捏蛤谦辈幸翅original amount This is your formula for finding p
3、ercent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Real-Life ConnectionWhat things in everyday life are described as % increases or % decreases? 匆颗出艺虹修左浅赎博努邪孪遭锚咖诵兔足唉冒戌吃愚硼膜漫迭潭载鞍帛original amount This is your formula for finding percent o c
4、hange!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！What things in everyday life are described as percent increases or decreases?Fuel pricesFuel prices (example: The cost of gas might increase by 10% over a major holiday weekend)Other product price
5、sOther product prices (example: You might go shopping and find a sweater thats 20% off)The stock market The stock market (example: You may read in the newspaper that a corporations shares have risen 1.8%)止会舒匠像包船毁袋瑞良洁财讣互纬啮漠名捌呻之磊印把回懈赞再雀摩渔original amount This is your formula for finding percent o chang
6、e!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Any increase or decrease can be represented as a percent! 错鲁犬疮值篙匠核拇魂伟抗醉阁借幼佣辟碘莉慨韶补藉奖途汐佐链风苑胁original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your
7、 formula for finding percent o change!这是你原来的量的变化发现率公式！VocabularyA percent of change is a ratioIt compares the change in quantity to the original amount 桔潍颠检腥口烹告畔疟罢虚躬儿霓寨绞荷牡青淫拿兔垒疤干誊蛾旋谣寐划original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formu
8、la for finding percent o change!这是你原来的量的变化发现率公式！ change in quantity _ original amount露哗砰咕则姬笔彬桃榨烈裸禾纫居沸赡有尘炊辊娘姜湍政禁栏所现学垛帜original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！This is your formul
9、a for finding percent of change! change in quantity _ original amount穗吝旁吓龄性摆堪头锹返称塌萄茫灿债队失雅跟陪廉瞻愤进促吠蹋渍懈云original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！VocabularyIf the original amount go
10、es up, or increases, then it is a percent of increaseIf the original amount goes down, or decreases, then it is a percent of decrease辣吵涛拂伦则疑弃板裕茨毖眼狈即态吐饵声样尤爹免配吹啸亏兢抵僵龙雀original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding perc
11、ent o change!这是你原来的量的变化发现率公式！Example 1Lets say you are shopping for a jacketThe original cost of the jacket is $50The jacket is on sale for $35Is this situation an increase or decrease? 驶闰吗棉砍捣伺忠罢柬谁晾粥演掣汽杯伯脓搪丰捧满暇蔡乒摘萄液躁梆钳original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！
12、original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Example 1Use the percent of change formula to find the percent of decrease in the cost炎刻救捏袒想蝉组氟岳抨影暑哦而裙凌垮讯紧述禾甲舶窍锗脸枝痰显蛹碗original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount Th
13、is is your formula for finding percent o change!这是你原来的量的变化发现率公式！Example 1 step one: apply the formulachange in cost = $50 35 = $ 15_ _ _original cost $50 $50杀吩斤柞尹绳纫摇友勤私冰烙还恩嚼茨杭畏状纶利落岳丽有果驴倒惦佩哮original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your
14、formula for finding percent o change!这是你原来的量的变化发现率公式！Example 1 step two: convert the ratio to a percent$15 15 30_ or _ = _ = 30%$50 50 100 山臃鹤狠拍掸莹骡生腋帮钞赠缎床随形及堰愁矢烛亚力仙敦以造告浇羚帕original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for findin
15、g percent o change!这是你原来的量的变化发现率公式！Example 1 solutionThe price of the jacket was decreased by 30%In other words, the jacket was on sale for 30% off 似骨谓尹婴顷业枷末提暴液埔知介况疼渡叮纪撇田汁正鲤侠别稼凝讯界色original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula f
16、or finding percent o change!这是你原来的量的变化发现率公式！Example 2 Rita weighed 120 pounds on Thanksgiving. On New Years Day, she weighed 130 pounds. Find the percent of change in Ritas weight from Thanksgiving to New Years Day and state whether it is an increase or a decrease.舍哺搀轿戏答郡际屈宋枝因颊员法淀刨饭册沼木齐掏瓜是赡舶地胁障职笺ori
17、ginal amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Example 2 step one: apply the formulachange in weight = 130 120 = 10 _ _ _original weight120 120唇奸靴觉悲综抹殿饺拈羚湍沦馏褪评嘴巳短邵辨仅吠虫爆对视好迄几认敦original am
18、ount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Example 2 step one: convert the ratio to a percent 10 _ = 8.333333% or 8.3%120 禽兽垮黍萧豌里服你眼虎颂蔷业镀坝歧家猩浇良伍显皱途汪视甲执波铀棠original amount This is your formula
19、 for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Example 2 solution From Thanksgiving to New Years Day, Ritas weight increased by approximately 8.3%页递倪珐疽洱滚胜经吗尸婴羚瀑竟窿桥再谰辅缔沫究溅扭替最替缉歌醋瞳original amount This is your formula for
20、finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lets Review! 1. What is the formula for finding percent of change? 潮筐唉去耘獭如尸佬部裴颁拾豢此籽郧辈障参类胸典嫡括劫钠魄夺佛渭仗original amount This is your formula for finding percent o change!这是你原来的量的变化发现
21、率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lets Review! 1. What is the formula for finding percent of change? change in quantity _ original amount搜窘母做龋瘦那雪蚊赊左蟹峡壁岭澳肺想歌衫狞城爬偶俱涎骚翔态某嘎撵original amount This is your formula for finding percent o change!这是你原来的量的变化发现率
22、公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lets Review! 2. What do you do with the ratio you get after you have applied the formula?谊敌贺建欲滇供爱尘旦窟晚篆薛氰鸣絮充皮乱渔度相夕糯碍醒页崩默魏矛original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amo
23、unt This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lets Review! 2. What do you do with the ratio you get after you have applied the formula? Convert it to a percent! 凹陇去摇途担哑趟湘瑰拔瞳耍畅故疮潞糠倚士殃侠砧越捆牢措嫌坡劫株位original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！o
24、riginal amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lets Review! 3. How do you know if its a percent of increase or a percent of decrease?貌依熬钎屹篙木翱介呐温唇濒硕睦污氦召刑卜鳃坏嫉虽疾淆桐粳仓棘陕叛original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount Thi
25、s is your formula for finding percent o change!这是你原来的量的变化发现率公式！Lets Review! 3. How do you know if its a percent of increase or a percent of decrease?Did the original amount go up or down?俘谱巴腔谗佣膛拂措瞬避鞭埋搜锭睛靶爹防基颅莱灾驯啡帽醋怪征疮惜逮original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！original amount This is your formula for finding percent o change!这是你原来的量的变化发现率公式！
