(5 x 10^-5) x (11 x 10^4) =
scientific: 5.5 x 10^0
decimal: 5.5
0.06457 =
scientific: 6.457 x 10^-2
(1.32 x 10^-3 + 3.44 x 10^-4)
same exponent:
(13.2 x 10^-4) + (3.44 x 10^-4)
final answer:
.001664
Ya.?
Scientific notation, just check and confirm with me!! please?
2008-08-21 12:39 pm
回答 (2)
2008-08-21 1:14 pm
✔ 最佳答案
The answers are rightYou forgot the scientific notation of the 3rd one :
1.664 x 10^-3
2008-08-21 10:24 pm
1)
(5 x 10^-5) x (11 x 10^4)
= (5 x 11)(10^-5 x 10^4)
= 55[10^(-5 + 4)]
= 55[10^-1]
= 55 x 10^-1
= 5.5 x 10^(-1 + 1)
= 5.5 x 10^0
2)
0.06457
= 6.457 x 0.01
= 6.457 x 1/10^2
= 6.457 x 10^-2
3)
(13.2 x 10^-4) + (3.44 x 10^-4)
= 10^-4(13.2 + 3.44)
= (1/10000)(16.64)
= 16.64/10000
= 0.001664
(5 x 10^-5) x (11 x 10^4)
= (5 x 11)(10^-5 x 10^4)
= 55[10^(-5 + 4)]
= 55[10^-1]
= 55 x 10^-1
= 5.5 x 10^(-1 + 1)
= 5.5 x 10^0
2)
0.06457
= 6.457 x 0.01
= 6.457 x 1/10^2
= 6.457 x 10^-2
3)
(13.2 x 10^-4) + (3.44 x 10^-4)
= 10^-4(13.2 + 3.44)
= (1/10000)(16.64)
= 16.64/10000
= 0.001664
收錄日期: 2021-05-01 11:01:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080821043944AAhQM5W