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ECZ Grade 12 School Certificate Mathematics — practice by topic

Browse 66 questions across 21 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

Probability (34)Binomial Theorem (32)Correlation and Regression (32)Geometry (32)Mean (32)Median (32)Permcomb (32)Permutations and Combinations (32)Probability & Statistics (32)Sequences (32)Sequences and Series (32)Vectors & 3D Geometry (32)Linear Programming (29)Probability Density Function (28)Probability Distribution (28)Statistics (8)Measurement (7)Euclidean geometry (6)Finance, growth and decay (6)Exponents and surds (1)Number patterns (1)

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What is a solid called once it has been unfolded flat?Read the answer and worked solution →Volume is measured in which kind of units?Read the answer and worked solution →What is an established or accepted principle called?Read the answer and worked solution →Simple interest is worked out on which amount only?Read the answer and worked solution →

Worked practice questions

What is a solid called once it has been unfolded flat?

  1. A net
  2. A face
  3. An edge
  4. A prism
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Correct answer: A. A net

1. Picture a cardboard box being opened out until it lies flat. 2. A solid that is unfolded like this is called a net. 3. Each face of the solid can then be seen clearly and its area worked out. _Source: Siyavula Mathematics Grade 11 (Everything Maths, CC BY 4.0), Chapter 7: Measurement_

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Volume is measured in which kind of units?

  1. Square units
  2. Cubic units
  3. Linear units
  4. Angle units
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Correct answer: B. Cubic units

1. Volume is the three dimensional space taken up by an object. 2. Three dimensions are multiplied together, so volume is measured in cubic units. 3. Surface area covers only two dimensions, so it is measured in square units. _Source: Siyavula Mathematics Grade 11 (Everything Maths, CC BY 4.0), Chapter 7: Measurement_

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What is an established or accepted principle called?

  1. A theorem
  2. A converse
  3. An axiom
  4. A chord
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Correct answer: C. An axiom

1. Some statements in geometry are accepted without any proof. 2. An axiom is an established or accepted principle. 3. A theorem is different, because it has to be shown to be true by argument. _Source: Siyavula Mathematics Grade 11 (Everything Maths, CC BY 4.0), Chapter 8: Euclidean geometry_

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