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在生活和生产实践中,我们常会遇到一些绝对值比较大的数,如果用普通的方法表示这些数很麻烦,且读起来又很不方便,有没有更好的方法表示这些绝对值较大的数呢?问题与情境据中央电视台《东方时空》栏目报道:人类对自然资源的不合理开发与利用,已严重破坏了大自然的生态平衡,目前地球上大约每45min就有一个物种灭绝.照此速度,请你预测:再过10年(1年以365天计算)大约有多少个物种灭绝?如何表示这个数?把10年化成分钟为10×365×24×60=5256000(min),由于每45min就有一个物种灭绝,所以10年大约灭绝的物种数为5256000÷45=116800.
In life and production practice, we often encounter a number of relatively large absolute values. If we use ordinary methods to express these numbers is very troublesome, and it is very inconvenient to read, is there a better way to express these absolute values? According to CCTV’s “Eastern Time and Space” section, the unreasonable exploitation and use of natural resources by humans has severely damaged the ecological balance of nature. At present, there is a species extinction every 45 minutes on the earth. At this rate, please predict: how many species will be extinct in another 10 years (1 year in 365 days)? How do you express this number? Turn 10 years into 10 x 365 x 24 x 60 = 5256,000 (min) Because there is a species extinction every 45 minutes, the number of species that have been extinct in 10 years is 5256000÷45=116800.