
XTJH第一冊1-4指數記法與科學記號-基礎10題
Authored by 余金城 余金城
Mathematics
7th Grade
Used 5+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
若臺灣於SARS風暴時,遭居家隔離人數達3萬人,政府每人給予津貼5千元,則需要多少經費?(以科學記號表示)
1.5×108元
1.5×109元
1.5×1010元
15×109元
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
假設毛毛雨的大小直徑約為0.05mm~0.5mm,若將0.05mm 表示成科學記號為a×10bmm,則下列敘述何者正確?
a=0.5
a=0.05
b=2
b=-2
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列哪一個數值與其他三個不相同?
6.23×106
623×103
0.623×107
62.3×105
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列各等式,何者正確?
-53=-(53)
(-5)2=-(52)
-(-53)=-(53)
-(-5)2=52
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列何式之值為54?
5+5+5+5
4+4+4+4+4
5×5×5×5
4×4×4×4×4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
下列各數中,何者為最小的數?
3.8×10-5
2.5×10-6
4×10-4
1.9×10-6
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
一個電子的帶電量是1.60218×10-19庫侖(計算電量的單位),則將1.60218×10-19化為小數時,在小數點後有幾個連續0?
17個
18個
19個
20個
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