数学题、急啊

来源：百度知道 编辑：UC知道 时间：2024/06/01 07:06:07
<1>
电冰箱：2680元/台 电视机：4500元/台
洗衣机：2180元/台 电风扇：180元/台

(1)电冰箱比电风扇贵百分之几？ （百分号前保留1位小数）
(2)洗衣机比电视机便宜百分之几？（百分号前保留1位小数）
(3)电视机比电冰箱贵百分之几？（百分号前保留1位小数）

<2>陈老师把8000元存入银行，定期三年，年利率是3.96%。到期时，陈老师可以得到利息多少元？

<3>小明把1000元压岁钱存入银行，定期五年，年利率是4.41%。到期时，他可以得到利息多少元？

<4>妈妈用年终奖金5000元的60%购买了五年期的国债券，年利率是3.81%。到期时，妈妈的本金和利息共有多少元？

<5>爸爸把10000元存入银行，定期一年，年利率是2.79%。

(1)到期时，爸爸可得利息多少元？
(2)到期时，爸爸一共可以取回多少元？

<6>李叔叔去银行取钱，第一次取出存款的60%还多400元，第二次取出余下的70%还多50元，此时存折上还有250元。李叔叔原有存款多少元？

自己算，很简单！ In the 10 minute breaks between classes, some students choose to stay indoors, sitting at their desks chatting with their classmates or dozing off. Others, however, prefer to go outdoors to play actively for a while. I am in favor of the latter, of course. The following are my reasons.
On the one hand, having been concentrating on what the teacher says and what they do in class makes both our brains and eyes tired. Playing actively outdoors provides our brains and eyes with entirely different kinds of activities, thus enabling them to have a complete rest. On the other hand, with so many students sitting in the classroom for such a long time, the air inside is certainly not fresh, and sometimes can even be foul which is certainly bad to our health. Playing actively outdoors enables us to breathe a lot of fresh air, thus making us refreshed and re energized very quickly. The last reason is that sitting at the desk for hours on end can be bad to our body. Playing act