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Lintel Jan 14 - 20 25 questions
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Monday 14 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0065 in standard form

    Answer: 6.5 × 10-3
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Hypotenuse = 36cm, angle = 25°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 32.63cm
  4. 4. Ratio

    In ratio 6:10:8, what fraction is the second part?

    Answer: 5⁄12
  5. 5. Statistics

    The mean of 5 numbers is 29. If 4 of them are 20, 24, 42, 38, what is the missing number?

    Answer: 21

Tuesday 15 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 290,000 in standard form

    Answer: 2.9 × 105
  2. 2. Algebra

    Factorise: x² - 5x - 14

    Answer: (x + 2)(x - 7)
  3. 3. Geometry

    Adjacent = 20cm, angle = 39°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.2cm
  4. 4. Ratio

    £217.00 is shared between A and B in the ratio 3:4. How much does A receive?

    Answer: £93.00
  5. 5. Statistics

    Calculate the mean of: 18, 24, 10, 49, 33, 23, 39

    Answer: 28

Wednesday 16 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 120,000 in standard form

    Answer: 1.2 × 105
  2. 2. Algebra

    Factorise: x² + 4x - 45

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

    Hypotenuse = 31cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.76cm
  4. 4. Ratio

    Simplify the ratio 5 hours : 25 minutes

    Answer: 12:1
  5. 5. Statistics

    Calculate the mean of: 43, 24, 18, 29, 37, 11, 7, 45

    Answer: 26.75

Thursday 17 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 230,000 in standard form

    Answer: 2.3 × 105
  2. 2. Algebra

    Factorise: x² + 4x - 21

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

    Adjacent = 11cm, angle = 59°. Find opposite. Give your answer to 2 decimal places

    Answer: 18.31cm
  4. 4. Ratio

    £168.00 is shared between A and B in the ratio 2:1. How much does A receive?

    Answer: £112.00
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 49, 33, 37, what is the missing number?

    Answer: 33

Friday 18 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 3,100,000 in standard form

    Answer: 3.1 × 106
  2. 2. Algebra

    Factorise: x² + 12x + 35

    Answer: (x + 7)(x + 5)
  3. 3. Geometry

    Adjacent = 24cm, angle = 40°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.14cm
  4. 4. Ratio

    Black, white and yellow marbles are in the ratio 11:6:3. What fraction of the marbles are white?

    Answer: 3⁄10
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 25, 35, 33, 22, what is the missing number?

    Answer: 70