數學(easy fast)
回答 (1)
2011-03-08 3:43 am
✔ 最佳答案
1.10.5 x2.12= 10.5 * 2 + 10.5 * 0.1 + 10.5 * 0.02
= 21 + 1.05 + 0.21
= 22.05 + 0.21
= 22.26
2.10.9 x1.25
= 10.9 * 1 + 10.9 * 0.2 + 10.9 * 0.05
= 10.9 + 2.18 + 0.545
= 13.08 + 0.545
= 13.625
參考: Hope the solution can help you^^”
收錄日期: 2021-04-12 15:04:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110307000051KK00990