1上 1-4 指數記法與科學記號

Quiz
•
Mathematics
•
7th Grade
•
Medium
康軒數位 康軒數位
Used 86+ times
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若a、b、c皆為整數,且a<0,b>0,c<0,則下列哪一個算式的值一定為正數?
a3b2
a2b+b2c
a(b+c)2
-(a-b+c)3
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
唐先生對李小姐說:「這一點點的禮物不算什麼,還不及妳對我的幫忙的千萬分之一呢!」請問千萬分之一這個數與下列哪一個數相等?
10-7
0.000000013
107
100003
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
太振以電子檔的方式,繳交他的期末報告,若他報告內容的檔案大小為500KB,已知1KB=1024Bytes=210Bytes,則500KB的檔案大小與下列哪一個數相等?
5.12×107Bytes
5.12×106Bytes
5.12×105Bytes
5.12×104Bytes
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
甲說:「在10進位中,100000可表示為105。」
乙說:「在10進位中,0.00001可表示為10-4。」
關於兩人的說法,下列何者正確?
都對
只有甲對
只有乙對
都錯
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
基北地區基本學力測驗考生約9萬1千人,報名費每人400元,則基北地區學力測驗報名費收入共多少元?(以科學記號表示)
3.64×106元
3.6×107元
3.64×107元
3.64×107元
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
若a=5.72×10n,其中n為整數,且0.0001>a>0.00001,則n=?
4
-4
5
-5
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
海關清點查扣的9大箱走私香菸,發現在每大箱裡有9個小箱子,在每個小箱子裡有9盒香菸,而每盒裝了9包香菸,則此次查扣的走私香菸共有幾包?
9×4
99
94
49
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