★ 用科學記數法表示下列各數
(a)60 000
(b)4800 000
(c)4872.7
(d)0.002 689
(e)0.000 000 5
(f) 0.000 400 72
★將下列各數化為整數或小數
(a) 7×10^4
(b)4.9×10^3
(c)1472×10^5
(d)10^-6
(e)3.5×10^-4
(f)2.84×10^-7
THZ:)
科學記數法
2011-11-28 4:18 am
回答 (2)
2011-11-28 4:25 am
✔ 最佳答案
1 用科學記數法表示下列各數(a)60 000 = 6 × 10^4
(b)4800 000 = 4.8 × 10^6
(c)4872.7 = 4.8727 × 10^3
(d)0.002 689 = 2.689 × 10^-3
(e)0.000 000 5 = 5 × 10^-7
(f) 0.000 400 72 = 4.0072 × 10^-4
2 將下列各數化為整數或小數
(a) 7×10^4 = 70000
(b)4.9×10^3 = 4900
(c)1472×10^5 = 147200000
(d)10^-6 = 0.00001
(e)3.5×10^-4 = 0.00035
(f)2.84×10^-7 = 0.000000284
2011-11-28 11:59 pm
(a)60 000 = 6 × 10^4
(b)4800 000 = 4.8 × 10^6
(c)4872.7 = 4.8727 × 10^3
(d)0.002 689 = 2.689 × 10^-3
(e)0.000 000 5 = 5 × 10^-7
(f) 0.000 400 72 = 4.0072 × 10^-4
(a) 7×10^4 = 70000
(b)4.9×10^3 = 4900
(c)1472×10^5 = 147200000
(d)10^-6 = 0.00001
(e)3.5×10^-4 = 0.00035
(f)2.84×10^-7 = 0.000000284
(b)4800 000 = 4.8 × 10^6
(c)4872.7 = 4.8727 × 10^3
(d)0.002 689 = 2.689 × 10^-3
(e)0.000 000 5 = 5 × 10^-7
(f) 0.000 400 72 = 4.0072 × 10^-4
(a) 7×10^4 = 70000
(b)4.9×10^3 = 4900
(c)1472×10^5 = 147200000
(d)10^-6 = 0.00001
(e)3.5×10^-4 = 0.00035
(f)2.84×10^-7 = 0.000000284
收錄日期: 2021-04-26 19:16:32
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111127000051KK00798