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PSLE Mathematics — practice by topic

Browse 119 questions across 4 Mathematics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Mathematics topics

Decimals (37)Percents (34)Whole Numbers (25)Fractions (23)

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What is another name for the counting numbers 1, 2, 3, 4, 5, and so on?Read the answer and worked solution →Which set of numbers is formed by including zero together with the counting numbers?Read the answer and worked solution →On a number line, what is the point labeled 0 called?Read the answer and worked solution →In a large written number, what is the name given to each group of three place values, such as ones, thousands, and millions?Read the answer and worked solution →

Worked practice questions

What is another name for the counting numbers 1, 2, 3, 4, 5, and so on?

  1. Natural numbers
  2. Whole numbers
  3. Prime numbers
  4. Even numbers
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Correct answer: A. Natural numbers

1. The numbers 1, 2, 3, 4, 5, and so on are the counting numbers. 2. These same numbers are also known by another name in mathematics. 3. Counting numbers are also called natural numbers. 4. Whole numbers add zero to this list, so that name describes a different set, and prime and even numbers are only special subsets of it. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 1 "Whole Numbers", section 1.1 Introduction to Whole Numbers_

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Which set of numbers is formed by including zero together with the counting numbers?

  1. The natural numbers
  2. The whole numbers
  3. The negative numbers
  4. The prime numbers
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Correct answer: B. The whole numbers

1. The counting numbers are 1, 2, 3, 4, 5, and so on. 2. Adding the number zero to this list creates a new set of numbers. 3. The whole numbers are the counting numbers and zero. 4. Natural numbers is another name for the counting numbers without zero, and negative and prime numbers describe different sets entirely. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 1 "Whole Numbers", section 1.1 Introduction to Whole Numbers_

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On a number line, what is the point labeled 0 called?

  1. The coordinate
  2. The denominator
  3. The origin
  4. The remainder
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Correct answer: C. The origin

1. A number line has equally spaced points labeled with numbers. 2. The starting point of the number line is labeled 0. 3. The point labeled 0 is called the origin. 4. The coordinate is the number paired with a point, the denominator belongs to fractions, and the remainder belongs to division, so none of those name the point 0. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 1 "Whole Numbers", section 1.1 Introduction to Whole Numbers_

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