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Lintel Sep 29 - Oct 5 25 questions
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Monday 29 September 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.073 in standard form

    Answer: 7.3 × 10-2
  2. 2. Algebra

    Factorise: x² - 3x - 108

    Answer: (x + 9)(x - 12)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 8.82cm
  4. 4. Ratio

    Red and blue counters are in the ratio 4:7. What fraction of the counters are blue?

    Answer: 7⁄11
  5. 5. Statistics

    Calculate the mean of: 31, 29, 5, 36, 35, 16, 44, 31. Give your answer to 2 decimal places

    Answer: 28.38

Tuesday 30 September 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0092 in standard form

    Answer: 9.2 × 10-3
  2. 2. Algebra

    Factorise: x² - 21x + 110

    Answer: (x - 10)(x - 11)
  3. 3. Geometry

    Adjacent = 18cm, angle = 43°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.79cm
  4. 4. Ratio

    Express the second part of 6:7 as a fraction in simplest form

    Answer: 7⁄13
  5. 5. Statistics

    Calculate the mean of: 40, 5, 11, 17, 8, 5, 32. Give your answer to 2 decimal places

    Answer: 16.86

Wednesday 1 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000051 in standard form

    Answer: 5.1 × 10-5
  2. 2. Algebra

    Factorise: x² - 3x - 28

    Answer: (x + 4)(x - 7)
  3. 3. Geometry

    Adjacent = 16cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.41cm
  4. 4. Ratio

    Orange and purple sweets are in the ratio 13:14. What fraction of the sweets are orange?

    Answer: 13⁄27
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 24, 16, 33, 48, 50, what is the missing number?

    Answer: 39

Thursday 2 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 24,000,000 in standard form

    Answer: 2.4 × 107
  2. 2. Algebra

    Factorise: x² - 7x + 12

    Answer: (x - 3)(x - 4)
  3. 3. Geometry

    Hypotenuse = 17cm, angle = 25°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.41cm
  4. 4. Ratio

    Express the first part of 13:2 as a fraction in simplest form

    Answer: 13⁄15
  5. 5. Statistics

    The mean of 4 numbers is 37. If 3 of them are 35, 50, 24, what is the missing number?

    Answer: 39

Friday 3 October 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000015 in standard form

    Answer: 1.5 × 10-5
  2. 2. Algebra

    Factorise: x² - 8x - 20

    Answer: (x + 2)(x - 10)
  3. 3. Geometry

    Adjacent = 20cm, angle = 36°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.53cm
  4. 4. Ratio

    Divide 92 in the ratio 1:1:2

    Answer: 23, 23 and 46
  5. 5. Statistics

    Calculate the mean of: 31, 15, 41, 26, 21, 32, 12. Give your answer to 2 decimal places

    Answer: 25.43