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Lintel Jan 31 - Feb 6 25 questions
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Monday 31 January 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 670,000 in standard form

    Answer: 6.7 × 105
  2. 2. Algebra

    Factorise: x² - 4x - 60

    Answer: (x + 6)(x - 10)
  3. 3. Geometry

    Adjacent = 24cm, angle = 39°. Find opposite. Give your answer to 2 decimal places

    Answer: 19.43cm
  4. 4. Ratio

    £176.00 is shared between A and B in the ratio 5:3. How much does A receive?

    Answer: £110.00
  5. 5. Statistics

    The mean of 4 numbers is 35. If 3 of them are 42, 29, 38, what is the missing number?

    Answer: 31

Tuesday 1 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 450,000 in standard form

    Answer: 4.5 × 105
  2. 2. Algebra

    Factorise: x² + x - 56

    Answer: (x + 8)(x - 7)
  3. 3. Geometry

    Hypotenuse = 34cm, angle = 25°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 30.81cm
  4. 4. Ratio

    Simplify the ratio 1 litre : 550 ml

    Answer: 20:11
  5. 5. Statistics

    Calculate the mean of: 40, 41, 11, 35, 32, 48, 31

    Answer: 34

Wednesday 2 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.078 in standard form

    Answer: 7.8 × 10-2
  2. 2. Algebra

    Factorise: x² - 15x + 36

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

    Adjacent = 26cm, angle = 49°. Find opposite. Give your answer to 2 decimal places

    Answer: 29.91cm
  4. 4. Ratio

    Simplify the ratio £3 : 35p

    Answer: 60:7
  5. 5. Statistics

    Calculate the mean of: 38, 30, 28, 10, 49, 30. Give your answer to 2 decimal places

    Answer: 30.83

Thursday 3 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 420,000 in standard form

    Answer: 4.2 × 105
  2. 2. Algebra

    Factorise: x² + 4x - 32

    Answer: (x + 8)(x - 4)
  3. 3. Geometry

    Hypotenuse = 36cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.55cm
  4. 4. Ratio

    £140.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £100.00
  5. 5. Statistics

    The mean of 5 numbers is 35. If 4 of them are 49, 50, 34, 16, what is the missing number?

    Answer: 26

Friday 4 February 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 8,600,000 in standard form

    Answer: 8.6 × 106
  2. 2. Algebra

    Factorise: x² + x - 20

    Answer: (x + 5)(x - 4)
  3. 3. Geometry

    Hypotenuse = 19cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.96cm
  4. 4. Ratio

    Red and blue beads are in the ratio 15:8. What fraction of the beads are blue?

    Answer: 8⁄23
  5. 5. Statistics

    Calculate the mean of: 16, 19, 28, 8, 24, 42, 47. Give your answer to 2 decimal places

    Answer: 26.29