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1、1 / 4折扣基础练基础练知识点一知识点一 折扣的意义及解决折扣问题的方法折扣的意义及解决折扣问题的方法1.填空。（1）一种商品打八折出售，售价是原价的，售价是原价的（ ）%。（ ） （ ）（2）一台电视机打七五折出售，售价是原价的（ ）%。2.计算下面各物品打折后的售价。计算下面各物品打折后的售价。七五折： 八折： 知识点二知识点二 成数的意义及解决成数问题的方法成数的意义及解决成数问题的方法3.把下列成数改写成百分数。把下列成数改写成百分数。三成（ ）% 五成（ ）%四成五（ ）% 三成四（ ）%4.填空。（1）一件上衣按原价的七成销售，现价是原价的（ ）%。（2）今年的粮食比去年增产二成
2、，即增产了（ ）%。5.书店打七五折售书，小丽买书花了 15 元，少花了多少钱？综合练综合练6.甲、乙两个商场举办购物促销活动，王叔叔要买一台售价 2000 元的电冰箱，去哪个商场购买更合算？7.2012 年元旦期间，欧亚商都开展购物促销活动：凡购物总额超过 2000 元以上的部分可以享受七五折优惠。李云家要买一台售价 1900 元的排油烟机，张红家要买一套售价 1500元的蚕丝被。两家合着买比分着买少花多少钱？参考答案参考答案2 / 41.（1） 80 （2）75452.45 元 68 元3.30 50 45 344.（1）70 （2）205.1575%20（元） 20155（元）6.甲商场
3、：20003001700（元）乙商场：200080%1600（元）去乙商场购买更合算。7.分着买：190015003400（元）合着买：（190015002000）75%1050（元）差价：340020001050350（元） 。内部资料，请勿外传！#XuyUP2kNXpRWXmA&UE9aQGn8xp$R#͑GxGjqv$UE9wEwZ#QcUE%&qYpEh5pDx2zVkum&gTXRm6X4NGpP$vSTT#&ksv*3tnGK8!z89AmYWpazadNu#KN&MuWFA5uxY7JnD6YWRrWwcvR9CpbK!zn%Mz849GxGjqv$UE9wEwZ#QcU
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