七上2-4指數律練習題13

七上2-4指數律練習題13

7th Grade

22 Qs

quiz-placeholder

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七上2-4指數律練習題13

七上2-4指數律練習題13

Assessment

Quiz

Mathematics

7th Grade

Practice Problem

Hard

Created by

黃俊賓 關山國中

Used 6+ times

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22 questions

Show all answers

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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