我不懂這兩題,請大家幫幫我!thx!
1. 3.61*10^ -3+2.3*10^ -4
2. (5.03*10^ -2)*(7.3*10^ -2)
科學記數法(10分)
2007-08-22 7:17 pm
回答 (2)
2007-08-22 7:24 pm
✔ 最佳答案
1. 3.61*10^(-3) + 2.3*10^ (-4)= 3.61*10^(-3) + 0.23*10^ (-3)
= 3.84*10^(-3)
2. (5.03*10^ -2)*(7.3*10^ -2)
= 5.03*7.3*10^[-2+(-2)]
= 36.719*10^(-4)
= 3.6719*10^(-3)
2007-08-22 7:40 pm
1. 3.61*10^(-3) + 2.3*10^ (-4)
= 3.61*10^(-3) + 0.23*10^ (-3)
= 3.84*10^(-3)
2. (5.03*10^ -2)*(7.3*10^ -2)
= 5.03*7.3*10^[-2+(-2)]
= 36.719*10^(-4)
= 3.6719*10^(-3)
= 3.61*10^(-3) + 0.23*10^ (-3)
= 3.84*10^(-3)
2. (5.03*10^ -2)*(7.3*10^ -2)
= 5.03*7.3*10^[-2+(-2)]
= 36.719*10^(-4)
= 3.6719*10^(-3)
收錄日期: 2021-04-13 13:45:20
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070822000051KK01417