S2-6.2-Ch.6量度的誤差

S2-6.2-Ch.6量度的誤差

8th Grade

8 Qs

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S2-6.2-Ch.6量度的誤差

S2-6.2-Ch.6量度的誤差

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Medium

Created by

Hoi Wong

Used 2+ times

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8 questions

Show all answers

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。

8.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

25.   志樂完成100 m賽跑所需的時間量得12.8 s(準確至最接近的0.1 s)。下列何者不可以是他賽跑所需的真確時間?

       The time taken by Roy to run 100 m is measured as 12.8 s correct to the nearest 0.1 s. Which of the following CANNOT be the actual time taken by him?

       A.     12.76 s

       B.     12.81 s

       C.     12.84 s

       D.     12.86 s

A

B

C

D

Answer explanation

25.     最大絕對誤差 

= 0.1 s / 2 = 0.05 s

            所需的真確時間的下限

            = (12.8 – 0.05) s

            = 12.75 s

            所需的真確時間的上限

            = (12.8 + 0.05) s

            = 12.85 s

            ∴ 

12.75s<真確時間<12.85 s

            ∴     答案是D。