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Olympiad (Class 7) Fractions and Decimals — practice questions — page 2

Explore 53 free Fractions and Decimals questions in Olympiad (Class 7) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.

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Fractions and Decimals questions and exercises with answers

Showing questions 31–53 of 53.

Which Flemish mathematician wrote the 1585 pamphlet De Thiende on decimal fractions?Read the answer and worked solution →In which century did positional decimal fractions first appear in a book by al-Uqlidisi?Read the answer and worked solution →The word percent comes from the Latin per centum, meaning what?Read the answer and worked solution →A loss of half a rupee is written as which fraction?Read the answer and worked solution →Which is the smallest of -1/5, 1/100, 0 and 3/4?Read the answer and worked solution →What fraction of an hour is 45 minutes, in lowest terms?Read the answer and worked solution →What is the average of 1/2 and 1/3?Read the answer and worked solution →A car travels 52.5 km on 3.5 L of fuel. How many km does it travel per litre?Read the answer and worked solution →A bottle holds 2.5 L. How much is 3/4 of the bottle?Read the answer and worked solution →Four friends each get 3/8 kg of sweets. What is the total weight?Read the answer and worked solution →A 6 m rope is cut into 4 equal pieces. How long is each piece?Read the answer and worked solution →If 3/5 of a number is 36, what is the number?Read the answer and worked solution →A number plus one quarter of itself equals 45. What is the number?Read the answer and worked solution →Which fraction is NOT equal to 2/5?Read the answer and worked solution →What is 0.0045 multiplied by 1000?Read the answer and worked solution →Which fraction equals the decimal 0.06 in lowest terms?Read the answer and worked solution →What is 2.35 + 3/4 written as a decimal?Read the answer and worked solution →What is 5 - 3.472?Read the answer and worked solution →Which of these numbers is closest to 1?Read the answer and worked solution →A tap fills 1/6 of a tank each hour. How many hours will it take to fill 5/6 of the tank?Read the answer and worked solution →Pipe A fills a tank in 3 hours and pipe B in 6 hours. How long do both take together?Read the answer and worked solution →What is 7 3/8 written as an improper fraction?Read the answer and worked solution →Write 37/8 as a mixed number.Read the answer and worked solution →

Worked practice questions

Which Flemish mathematician wrote the 1585 pamphlet De Thiende on decimal fractions?

  1. Fibonacci
  2. Simon Stevin
  3. John Napier
  4. Al-Kashi
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Correct answer: B. Simon Stevin

De Thiende, published at Leyden in 1585, was written by Simon Stevin.

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In which century did positional decimal fractions first appear in a book by al-Uqlidisi?

  1. 3rd century BCE
  2. 15th century
  3. 10th century
  4. 17th century
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Correct answer: C. 10th century

Al-Uqlidisi wrote about positional decimal fractions in the 10th century.

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The word percent comes from the Latin per centum, meaning what?

  1. per hundred
  2. per thousand
  3. per million
  4. per ten
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Correct answer: A. per hundred

Per centum means per hundred, matching the implied denominator of 100.

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More Mathematics topics

Data interpretation and analysisRational numbersSimple Linear EquationsPerimeter and areaTriangles and congruence of trianglesConstructions and TilingsIntegersFactors and Multiples