XTJH第一冊1-4指數記法與科學記號-基礎10題

XTJH第一冊1-4指數記法與科學記號-基礎10題

7th Grade

10 Qs

quiz-placeholder

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XTJH第一冊1-4指數記法與科學記號-基礎10題

XTJH第一冊1-4指數記法與科學記號-基礎10題

Assessment

Quiz

Mathematics

7th Grade

Medium

Created by

余金城 余金城

Used 5+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

臺灣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

1.5×109

1.5×1010

15×109

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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