F.1 math
2012-01-12 11:49 pm
the circumference of a circular sand pond is 31m. use compatible numbers to estimate its diameter. use pie is 22/7
回答 (3)
2012-01-13 12:04 am
✔ 最佳答案
The circumference =31m~30mpie~22/7~21/7~3
diameter~30/3=10m
Estimation using compatible value(numbers)
i.e. the numbers being rounding up/down to a value for easier calculation
e.g. 9.3294/(10/3)
9.3294~9
10/3~3
9.3294/(10/3)~9/3=3
2012-01-13 3:47 am
What is compatible numbers ?
收錄日期: 2021-04-13 18:29:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20120112000051KK00451