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S2-6.2-Ch.6量度的誤差

Authored by Hoi Wong

Mathematics

8th Grade

Used 2+ times

S2-6.2-Ch.6量度的誤差
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8 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

A

B

C

D

Answer explanation

18.     絕對誤差   =

(80 – 79.2) cm  = 0.8 cm

            ∴     答案是B。

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

A

B

C

D

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

A

B

C

D

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Media Image

A

B

C

D

Answer explanation

Media Image

 

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

22.   嘉怡的真確體重的下限和上限分別為52.25 kg和52.35 kg。量得的體重的最大絕對誤差是

       The lower limit and the upper limit of the actual weight of Rosa are 52.25 kg and 52.35 kg respectively. The maximum absolute error of the measured weight is

       A.     0.01 kg。

       B.     0.02 kg。

       C.     0.05 kg。

       D.     0.1 kg。

A

B

C

D

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

23.   一個水瓶的容量量得480 mL(準確至最接近的10 mL)。下列何者是該水瓶的真確容量的下限和上限?The capacity of a bottle is measured as 480 mL correct to the nearest 10 mL. Which of the following is the lower limit and the upper limit of the actual capacity of the bottle?

                   下限                          上限

       A.        470 mL                      490 mL

       B.        475 mL                      485 mL

       C.        479 mL                      489 mL

       D.        479.5 mL                   489.5 mL

A

B

C

D

Answer explanation

23.     最大絕對誤差

=10mL/2= 5 mL

            真確容量的下限

            = (480 – 5) mL

            = 475 mL

            真確容量的上限

            = (480 + 5) mL

            = 485 mL

            ∴     答案是B。

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

24.   一個水缸內水的體積量得26.5 m3(準確至最接近的0.5 m3)。下列何者可以是該水缸內水的 真確體積?

       The volume of water in a tank is measured as 26.5 m3 correct to the nearest 0.5 m3. Which of the following can be the actual volume of water in the tank?

       A.     26.0 m3

       B.     26.25 m3

       C.     26.75 m3

       D.     27.0 m3

A

B

C

D

Answer explanation

24.     最大絕對誤差 

= 0.25/2 m3  = 0.25 m3

            真確體積的下限

            = (26.5 – 0.25) m3

            = 26.25 m3

            真確體積的上限

            = (26.5 + 0.25) m3

            = 26.75 m3

            ∴  

26.25m3 <真確體積<26.75m3

            ∴     答案是B。

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