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Lintel Mar 18 - 24 25 questions
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Monday 18 March 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 530,000 in standard form

    Answer: 5.3 × 105
  2. 2. Algebra

    Factorise: x² - 4x - 5

    Answer: (x + 1)(x - 5)
  3. 3. Geometry

    Hypotenuse = 21cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.13cm
  4. 4. Ratio

    In ratio 4:10:5, what fraction is the second part?

    Answer: 10⁄19
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 39, 18, 19, 29, what is the missing number?

    Answer: 65

Tuesday 19 March 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000049 in standard form

    Answer: 4.9 × 10-5
  2. 2. Algebra

    Factorise: x² - 12x + 11

    Answer: (x - 1)(x - 11)
  3. 3. Geometry

    Adjacent = 15cm, angle = 36°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.9cm
  4. 4. Ratio

    £234.00 is shared between A and B in the ratio 4:5. How much does A receive?

    Answer: £104.00
  5. 5. Statistics

    Calculate the mean of: 47, 15, 47, 32, 36, 43, 29. Give your answer to 2 decimal places

    Answer: 35.57

Wednesday 20 March 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 53,000 in standard form

    Answer: 5.3 × 104
  2. 2. Algebra

    Factorise: x² - 11x + 30

    Answer: (x - 5)(x - 6)
  3. 3. Geometry

    Hypotenuse = 35cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.06cm
  4. 4. Ratio

    £180.00 is shared between A and B in the ratio 5:4. How much does A receive?

    Answer: £100.00
  5. 5. Statistics

    The mean of 4 numbers is 37. If 3 of them are 48, 28, 43, what is the missing number?

    Answer: 29

Thursday 21 March 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00008 in standard form

    Answer: 8 × 10-5
  2. 2. Algebra

    Factorise: x² - x - 72

    Answer: (x + 8)(x - 9)
  3. 3. Geometry

    Adjacent = 23cm, angle = 58°. Find opposite. Give your answer to 2 decimal places

    Answer: 36.81cm
  4. 4. Ratio

    In ratio 4:6:6, what fraction is the first part?

    Answer: 1⁄4
  5. 5. Statistics

    Calculate the mean of: 20, 22, 15, 12, 37, 19. Give your answer to 2 decimal places

    Answer: 20.83

Friday 22 March 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 500,000 in standard form

    Answer: 5 × 105
  2. 2. Algebra

    Factorise: x² - 3x - 40

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

    Hypotenuse = 25cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.87cm
  4. 4. Ratio

    Simplify the ratio 9m : 60cm

    Answer: 15:1
  5. 5. Statistics

    Calculate the mean of: 33, 20, 24, 46, 48, 12, 17. Give your answer to 2 decimal places

    Answer: 28.57