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Lintel Apr 28 - May 4 25 questions
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Monday 28 April 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.02 in standard form

    Answer: 2 × 10-2
  2. 2. Algebra

    Factorise: x² + 10x + 21

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

    Hypotenuse = 16cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio

    Simplify: 10:8:8

    Answer: 5:4:4
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 48, 24, 15, what is the missing number?

    Answer: 33

Tuesday 29 April 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 340,000 in standard form

    Answer: 3.4 × 105
  2. 2. Algebra

    Factorise: x² - 3x - 40

    Answer: (x + 5)(x - 8)
  3. 3. Geometry

    Adjacent = 12cm, angle = 34°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.09cm
  4. 4. Ratio

    Simplify: 4:6:12

    Answer: 2:3:6
  5. 5. Statistics

    Calculate the mean of: 27, 20, 20, 14, 8, 39. Give your answer to 2 decimal places

    Answer: 21.33

Wednesday 30 April 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 8,000,000 in standard form

    Answer: 8 × 106
  2. 2. Algebra

    Factorise: x² - 5x - 24

    Answer: (x + 3)(x - 8)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 52°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 19.09cm
  4. 4. Ratio

    Simplify: 4:8:8

    Answer: 1:2:2
  5. 5. Statistics

    Calculate the mean of: 19, 10, 12, 41, 26, 23. Give your answer to 2 decimal places

    Answer: 21.83

Thursday 1 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000072 in standard form

    Answer: 7.2 × 10-5
  2. 2. Algebra

    Factorise: x² + x - 110

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

    Adjacent = 21cm, angle = 46°. Find opposite. Give your answer to 2 decimal places

    Answer: 21.75cm
  4. 4. Ratio

    Express the second part of 5:2 as a fraction in simplest form

    Answer: 2⁄7
  5. 5. Statistics

    Calculate the mean of: 16, 33, 30, 42, 6, 41, 48, 46

    Answer: 32.75

Friday 2 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 890,000,000 in standard form

    Answer: 8.9 × 108
  2. 2. Algebra

    Factorise: x² - 4x - 45

    Answer: (x + 5)(x - 9)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 41°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.32cm
  4. 4. Ratio

    Orange and purple sweets are in the ratio 10:13. What fraction of the sweets are purple?

    Answer: 13⁄23
  5. 5. Statistics

    Calculate the mean of: 22, 13, 8, 5, 39, 8, 44. Give your answer to 2 decimal places

    Answer: 19.86