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Lintel Oct 17 - 23 25 questions
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Monday 17 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0013 in standard form

    Answer: 1.3 × 10-3
  2. 2. Algebra

    Factorise: x² + 7x - 18

    Answer: (x + 9)(x - 2)
  3. 3. Geometry

    Adjacent = 16cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.85cm
  4. 4. Ratio

    £147.00 is shared between A and B in the ratio 4:3. How much does A receive?

    Answer: £84.00
  5. 5. Statistics

    Calculate the mean of: 45, 20, 38, 40, 11, 20, 13, 34. Give your answer to 2 decimal places

    Answer: 27.63

Tuesday 18 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.043 in standard form

    Answer: 4.3 × 10-2
  2. 2. Algebra

    Factorise: x² - 8x - 9

    Answer: (x + 1)(x - 9)
  3. 3. Geometry

    Adjacent = 25cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 37.06cm
  4. 4. Ratio

    Divide 120 in the ratio 3:2:1

    Answer: 60, 40 and 20
  5. 5. Statistics

    Calculate the mean of: 32, 44, 17, 21, 14, 25, 20, 26. Give your answer to 2 decimal places

    Answer: 24.88

Wednesday 19 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 940,000 in standard form

    Answer: 9.4 × 105
  2. 2. Algebra

    Factorise: x² + 7x + 10

    Answer: (x + 5)(x + 2)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.97cm
  4. 4. Ratio

    In ratio 3:11:5, what fraction is the first part?

    Answer: 3⁄19
  5. 5. Statistics

    The mean of 5 numbers is 30. If 4 of them are 34, 27, 22, 31, what is the missing number?

    Answer: 36

Thursday 20 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00065 in standard form

    Answer: 6.5 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 132

    Answer: (x + 12)(x - 11)
  3. 3. Geometry

    Adjacent = 21cm, angle = 54°. Find opposite. Give your answer to 2 decimal places

    Answer: 28.9cm
  4. 4. Ratio

    Simplify the ratio kg : 400g

    Answer: 5:2
  5. 5. Statistics

    Calculate the mean of: 43, 39, 44, 14, 37, 11. Give your answer to 2 decimal places

    Answer: 31.33

Friday 21 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 680,000,000 in standard form

    Answer: 6.8 × 108
  2. 2. Algebra

    Factorise: x² + 4x - 5

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

    Hypotenuse = 25cm, angle = 49°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio

    Simplify the ratio 3kg : 150g

    Answer: 20:1
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 47, 24, 30, what is the missing number?

    Answer: 35