Grade 8 Math Test Unit: Measurment

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| By Jonascutioe347

Jonascutioe347

Community Contributor

Quizzes Created: 2 | Total Attempts: 7,614

Questions: 7 | Attempts: 722 | Updated: Mar 21, 2023

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This test is a review of what you learned in class about measurment! GOOD LUCK!

Questions and Answers

1.

Which unit of measurment could be used to measure a pencil?
- A.
  
  Feet
- B.
  
  Meters
- C.
  
  Millimeters
- D.
  
  Inches
Correct Answer
D. Inches

Explanation
Inches could be used to measure a pencil because it is a small unit of measurement that is commonly used for smaller objects. Pencils are typically measured in inches because they are relatively small in size.

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2.

5 inches is how many centimeters? 1in = 2.54cm
- A.
  
  12.6
- B.
  
  12.5
- C.
  
  13
- D.
  
  12.7
Correct Answer
D. 12.7

Explanation
The correct answer is 12.7 because 5 inches is equal to 5 multiplied by 2.54 centimeters, which equals 12.7 centimeters.

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3.

3.5 feet is how many centimeters? 1ft = 30cm
- A.
  
  105
- B.
  
  104
- C.
  
  108
- D.
  
  110
Correct Answer
A. 105

Explanation
To convert feet to centimeters, we need to multiply the given value by the conversion factor of 30 cm/ft. Therefore, 3.5 feet is equal to 3.5 * 30 = 105 centimeters.

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4.

Is it true that 1 foot is 45 centimeters?
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The statement "1 foot is 45 centimeters" is false. The correct conversion is that 1 foot is equal to approximately 30.48 centimeters.

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5.

Transfer 27ft 2 5/16 to centimeters.

Correct Answer
816

Explanation
To convert 27ft 2 5/16 to centimeters, we need to first convert feet to inches and then inches to centimeters. There are 12 inches in a foot, so 27ft is equal to 27 * 12 = 324 inches. Next, we add the 2 5/16 inches to get a total of 326 5/16 inches. Finally, we convert inches to centimeters by multiplying by 2.54 (since 1 inch is equal to 2.54 centimeters). Therefore, 326 5/16 inches is equal to 326.3125 inches. Multiplying this by 2.54 gives us 826.915625 centimeters, which rounds to 816 centimeters.

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6.

Explain how you got your answer
7.

The distance bettween Kayla's house and Betty's house is 3 1/2 miles. It takes Kayla 50 minutes to get to Betty's house. What is the speed in km/h?

Correct Answer
6.72

Explanation
To find the speed in km/h, we need to convert the distance from miles to kilometers and the time from minutes to hours. Since 1 mile is approximately equal to 1.60934 kilometers, we can multiply 3.5 miles by 1.60934 to get the distance in kilometers. Next, we divide the time of 50 minutes by 60 to convert it to hours. Finally, we divide the distance in kilometers by the time in hours to get the speed in km/h. The result is 6.72 km/h.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Aug 07, 2012

Quiz Created by
Jonascutioe347

Grade 8 Math Test Unit: Measurment

Which unit of measurment could be used to measure a pencil?

5 inches is how many centimeters? 1in = 2.54cm

3.5 feet is how many centimeters? 1ft = 30cm

Is it true that 1 foot is 45 centimeters?

Transfer 27ft 2 5/16 to centimeters.

Explain how you got your answer

The distance bettween Kayla's house and Betty's house is 3 1/2 miles. It takes Kayla 50 minutes to get to Betty's house. What is the speed in km/h?