用打折写一篇数学作文【一】
1．使学生学会比较亿以内数的大小。
2．培养学生比较、分析、类推的能力。
3．会将整万的数改成用“万”作单位的数。
4．会用“四舍五入”法省略亿以内数万后面的尾数，求出它的近似数。
5．引导学生观察、体验数学与生活的密切联系，让学生数学知识来源于生活，服务于生活，培养学生主动探究的精神和用数学的意识。
用打折写一篇数学作文【二】
到了超市，推着购物车，我东张西望，想着买什么好。没过一会儿，购物车里塞满了我精心挑选地6种零食：美国葵花子0·87kg、香蕉片0·78kg、山楂片0·68kg、话梅0·48kg、咸干花生1·06kg。掰着手指算了算原来的总价是14·40+16·54+9·00+11·60+12·60+21·20共85·31元。看着这些美味的零食，我的口水早已流下三千尺。算账时，收银台的姐姐说因为有优惠，共便宜了10·41元，现共74·9元。姐姐又给我一张深蓝色的卡，我不解地问；“姐姐，这是什么？”她回答：“这是刮奖卡，消费满68元的顾客就可以领取，要求在卡上，最高奖金有15000元！”我小心翼翼地刮开刮奖区，与要求对一下，获得了2元，这样我只用了72·9元。
我蹦蹦跳跳地回到奶奶家，把零食依依从购物袋里取出来，把剩下的27。1元换给了奶奶，又说：“奶奶，本来是要花85·31元，优惠后之用74·90元，刮奖又‘赚’2元，只用了72·9元。”奶奶听了后了开了花，眉开颜笑地说；“媛媛（我的小名）真会算，将来一定是个会过好日子的人！”
用打折写一篇数学作文【三】
早就听说日本的松下电器不错，可是堂堂中国的国庆节怎么能买其他国家的商品呢？电器当然得买国产的。我和妈妈逛了几家电器城，一看，不是打5折甩卖，就是打8折促销。我心里乐开了花：“太好了！这么大的折扣，一定会比平常便宜很多吧？！”我急忙拉着妈妈去找我们上周看过的冰箱，我定睛一看：咦，这台冰箱上周原价3000元，现在打8折，应该是2400元，为什么会是2800元呢？我再一细看，原来商家把原价改成了3500元。又看了其他几家也是这样，而且招数千变万化，有的知道顾客会把商品跟其他店比较，就故意把价钱压低，再做些夸张的\'广告，或以“买一送一”、“买一送十”来吸引顾客，其实只是送一些名不副实的小赠品。像我这样缺少经验的顾客很容易就信以为真，觉得这家店的商品物美价廉，购买量自然就上升了。
有些商家真狡猾呀，为了让自己的利益更大化，就使用“障眼法”来迷惑大家，让顾客高兴地上当，明明吃了哑巴亏，还以为捡了个大便宜。为了减少吃亏，我们在买东西之前，可以到苏宁、淘宝、京东大致了解市场价，也可以问问身边买过、用过的人，哪一种质量更好，这样才能买到价格更合理的商品，让生活更舒心愉快。
记住，不要被“打折”所迷惑，要时刻清醒头脑，细心、谨慎、不贪心才是我们智慧实用的“购物方针”。
用打折写一篇数学作文【四】
My dear English teacher:
From my English, I will contact a deeply like English. English let me open view, let me understand the culture of different region amorous feelings to.
I want to use English freely and talk to people, but my spoken English is very bad.Language is a kind of habit, I find it hard to correct his poor pronunciation, this makes me very distressed, but I have worked very hard in the improved.
I feel that learning English is the key to read more look more, I like reading comprehension, it not only let me get some knowledge, but also let me realize the happiness of learning English, I feel very proud can read English article.
Thank you for teaching me. I believe in your teachings, I can certainly through their efforts to learn English well.
Best wishes for you!
Yours,nidemingzi
Yours
XXX
用打折写一篇数学作文【五】
Such is sons’ nature; I really do not know how to express my thanks to you. However, I can imagine, on the day 18 years ago, when you gave birth to me, what a complex feeling you had. In the past few years, every day you struggle me up in the morning and prepare breakfast for me, then in the afternoon, you always welcome your only son with delicious foods after a day‘s hard work. Now your son has been 18 and will go to university soon, like a bird is leaving its parents. Nevertheless, your footprints on my heart will never ever fade and I love you mum!
your son
用打折写一篇数学作文【六】
Dear teacher,
We\'ll have a class meeting this afternoon. All of us students hope that you can attend it. Please accept our sincere invitation.
In the class meeting, we will make some plans about all the subjects, including English. We do have some puzzles and we need your help. So we hope you can set some time aside to be with us in the class meeting. We will feel honored if you can come to attend our class meeting.
Looking forward to your coming.
Yours
XXX
