13+ Common Entrance · Topic guide

Maths: Full Practice Paper (Additional, Level 3, Set 4)

This is the fourth full practice paper for Additional Mathematics (Level 3), the further 13+ Common Entrance paper sat only by candidates entered for it, giving a further complete timed paper of algebra, trigonometry, proportion and standard form beyond the Core syllabus.

Year 7-8 (13+)MathsISEB

Before you start

Make sure you're comfortable with these topics first:

Method

  1. Read the whole question through before starting, since Additional Mathematics questions often disguise a Pythagoras, trigonometry or proportion question inside a worded context.
  2. Keep trigonometry (SOHCAHTOA), Pythagoras' theorem, direct and inverse proportion, standard form and quadratic factorising secure, since these recur across every Additional Mathematics paper.
  3. Write out every algebraic step in full, since method marks are given for correct working even when the final answer is wrong.
  4. In a proportion question, find and state the constant of proportionality explicitly before using it to answer the question.
  5. Carry full accuracy through a multi-step calculation, rounding only the final answer to the accuracy requested.
  6. Check a quadratic solution by substituting it back into the original equation before finalising your answer.
  7. Give the highest-mark questions, usually near the end of the paper, more time than an early, low-mark question.

Worked example

A flagpole casts a shadow of 12 m when the sun's rays make an angle of 38 degrees with the ground. Work out the height of the flagpole, giving your answer to 1 decimal place.

  1. Label the triangle: the shadow (12 m) is adjacent to the 38 degree angle, and the flagpole's height is opposite.
  2. Since opposite and adjacent are involved, use tangent: tan(38) = height / 12.
  3. Rearrange and substitute: height = 12 x tan(38).
  4. Evaluate: 12 x 0.7813 = 9.3756.
  5. Round to 1 decimal place. Final answer: 9.4 m.

Practice questions

Type your answer and press Check to be marked straight away, or reveal the answer and mark yourself.

Q1A right-angled triangle has shorter sides of 9 cm and 40 cm. Work out the length of the hypotenuse.Show answer

Answer: 41 cm (9^2 + 40^2 = 1681, sqrt(1681) = 41)

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Q2y is directly proportional to x^2. When x = 4, y = 32. Work out y when x = 6.Show answer

Answer: 72 (the constant is 32 / 16 = 2, so y = 2 x 36 = 72)

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Q3Write 5.4 x 10^4 as an ordinary number.Show answer

Answer: 54000

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Q4Solve x^2 - 2x - 24 = 0.Show answer

Answer: x = 6 or x = -4 (factorises to (x - 6)(x + 4) = 0)

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Q5In a right-angled triangle, the angle at A is 27 degrees and the opposite side is 6 cm. Work out the length of the hypotenuse, to 1 decimal place.Show answer

Answer: 13.2 cm (hypotenuse = 6 / sin(27) = 13.2161, which rounds to 13.2)

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Q6p is inversely proportional to q. When q = 8, p = 9. Work out p when q = 6.Show answer

Answer: 12 (the constant is 8 x 9 = 72, so p = 72 / 6 = 12)

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Exam-style questions

Written in the style of a 13+ Common Entrance exam paper, with a full mark scheme.

Q1[3 marks]

Solve the equation x^2 + x - 20 = 0.

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Q2[4 marks]

The number of days D needed to build a wall is inversely proportional to the number of identical workers n. When n = 4, D = 15. (a) Find D when n = 6. (b) Find n when D = 5.

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Q3[5 marks]

A right-angled triangle has a hypotenuse of 18 cm and one angle of 55 degrees. (a) Find the length of the side opposite the 55 degree angle, to 1 decimal place. (b) Find the length of the side adjacent to the 55 degree angle, to 1 decimal place. (c) Use your rounded answers to (a) and (b) to estimate tan(55 degrees), to 2 decimal places.

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Free printable worksheet

Want more practice on paper? Download the maths: full practice paper (additional, level 3, set 4) worksheet pack - 9 pages of exam-style questions with a full mark scheme. One email opens every download in this browser for 14 days - no account, no card. Print it for personal and classroom use.

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