What Can You Say About Rounding Decimals?

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Questions: 10 | Attempts: 438 | Updated: Mar 21, 2023

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What Can You Say About Rounding Decimals? - Quiz

Rounding Decimals. We can round decimals to a certain accuracy or number of decimal places. This is used to make calculation easier to do and results easier to understand, when exact values are not too important.

Questions and Answers

1.

Rounding Decimal is a topic in which course or subject?
- A.
  
  Maths
- B.
  
  Music
- C.
  
  Biology
- D.
  
  Sociology
Correct Answer
A. Maths

Explanation
The topic of rounding decimals falls under the subject of Maths. In Maths, students learn about numbers, operations, and various mathematical concepts, including rounding. Rounding decimals involves approximating a decimal number to a specified place value, such as rounding to the nearest whole number or to a certain decimal place. It is an important skill in mathematics and is commonly taught in math courses at various levels of education.

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2.

To round a number to the nearest tenth, look at the next place value to ....?
- A.
  
  The tenths
- B.
  
  The hundredths
- C.
  
  The thousandths
- D.
  
  The ten thousandths
Correct Answer
B. The hundredths

Explanation
To round a number to the nearest tenth, we need to look at the next place value, which is the hundredths. This means that we need to examine the digit in the hundredths place to determine whether to round up or down. If the digit in the hundredths place is 5 or greater, we round up. If it is less than 5, we round down.

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3.

Place values is important in Rounding Decimals.
- A.
  
  Not sure
- B.
  
  True
- C.
  
  False
- D.
  
  A little
Correct Answer
B. True

Explanation
Place values are indeed important in rounding decimals. When rounding decimals, we look at the digit to the right of the desired decimal place. If this digit is 5 or greater, we round up, and if it is less than 5, we round down. The place value of the digit being rounded affects the rounding process, as it determines which digit will be affected by the rounding. Therefore, understanding place values is crucial in accurately rounding decimals.

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4.

To round a number to the nearest hundredth , look at the next place value to .....?
- A.
  
  The thousandths
- B.
  
  The hundredths
- C.
  
  The tenths
- D.
  
  The ten thousandths
Correct Answer
A. The thousandths

Explanation
To round a number to the nearest hundredth, we need to look at the next place value, which is the thousandths. The thousandths place tells us the value of the third decimal place. By examining the value in the thousandths place, we can determine whether to round up or down the hundredths place.

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5.

In general, to round to a certain place value, look at the digit to the ..... of that place value and make a decision.
- A.
  
  Top
- B.
  
  Left
- C.
  
  Middle
- D.
  
  Right
Correct Answer
D. Right

Explanation
To round to a certain place value, we need to look at the digit to the right of that place value. This is because the digit to the right determines whether we round up or down. If the digit to the right is 5 or greater, we round up. If it is less than 5, we round down. Therefore, the correct answer is "right".

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6.

Mathematics is usually taught at?
- A.
  
  Church
- B.
  
  School
- C.
  
  Home
- D.
  
  Museum
Correct Answer
B. School

Explanation
Mathematics is usually taught at school because it is considered an essential subject in the curriculum of educational institutions. Schools provide a structured learning environment with qualified teachers who specialize in teaching mathematics. Additionally, schools have the necessary resources such as textbooks, mathematical tools, and technology to support the teaching and learning of mathematics.

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7.

Rounding Decimals is a topic under ....?
- A.
  
  Music
- B.
  
  Biology
- C.
  
  English Language
- D.
  
  Mathematics
Correct Answer
D. Mathematics

Explanation
Rounding decimals is a mathematical concept that involves approximating a decimal number to a specific place value. It is not related to music, biology, or the English language. Therefore, the correct answer is Mathematics.

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8.

Rounding 0.843 to the nearest tenth would give ....?
- A.
  
  0.8
- B.
  
  0.6
- C.
  
  1.2
- D.
  
  0.4
Correct Answer
A. 0.8

Explanation
Rounding 0.843 to the nearest tenth involves looking at the digit in the hundredth place, which is 4. Since 4 is less than 5, we do not need to round up. Therefore, the digit in the tenths place remains the same, which is 0. Hence, rounding 0.843 to the nearest tenth gives us 0.8.

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9.

If the hundredths and thousandths places are fifty or more, the tenths place is increased by one. The decimal 0.866 rounded to the nearest tenth is ....?
- A.
  
  0.8
- B.
  
  0.9
- C.
  
  0.6
- D.
  
  0.4
Correct Answer
B. 0.9

Explanation
When rounding to the nearest tenth, we look at the hundredths place. In this case, the hundredths place is 6, which is greater than 5. According to the given rule, if the hundredths place is 5 or more, we increase the tenths place by one. Therefore, the tenths place, which is currently 8, is increased to 9. Thus, the decimal 0.866 rounded to the nearest tenth is 0.9.

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10.

They are all scientists except
- A.
  
  Donald Trump
- B.
  
  Albert Einstein
- C.
  
  Isaac Newton
- D.
  
  Bill Nye
Correct Answer
A. Donald Trump

Explanation
The given options consist of renowned scientists such as Albert Einstein, Isaac Newton, and Bill Nye. However, Donald Trump is not a scientist but a businessman and former president of the United States. Therefore, the correct answer is Donald Trump.

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