
七上2-4指數律練習題13
Authored by 黃俊賓 關山國中
Mathematics
7th Grade
Used 6+ times

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22 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
4200000 的科學記號表示法為何?
4.2×105
4.2×106
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
將 (−2) × (−2) × (−2) × (−2) 寫成指數記法的形式,下列何者正確?
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者的值與其他三者不同?
−(−1)
−| −1 |
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列何者是 0.000815 的科學記號?
8.15×10-3
8.15×10-4
815×10-3
815×10-6
Answer explanation
0.000815=8.15×10-4
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪一個數值最小?
9.5×10-9
Answer explanation
(A) 9.5×10-9=0.95×10-8
(B) 2.5×10-9=0.25×10-8
(C) 9.5×10-8
(D) 2.5×10-8
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
如果 500 張白紙的厚度大約是 1.5 公分,那麼一張白紙的厚度大約是多少公分?(以科學記號表示)
Answer explanation
1.5÷500=0.003=3×10-3(公分)
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
計算53÷52×23-32=?
31
21
11
1
Answer explanation
原式=125÷25×8-9=5×8-9
=40-9
=31
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