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Lintel Oct 18 - 24 25 questions
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Monday 18 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,200,000 in standard form

    Answer: 7.2 × 106
  2. 2. Algebra

    Factorise: x² - 6x - 16

    Answer: (x + 2)(x - 8)
  3. 3. Geometry

    Adjacent = 22cm, angle = 45°. Find opposite

    Answer: 22cm
  4. 4. Ratio

    £259.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £74.00
  5. 5. Statistics

    Calculate the mean of: 28, 28, 21, 45, 19, 23, 38. Give your answer to 2 decimal places

    Answer: 28.86

Tuesday 19 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.048 in standard form

    Answer: 4.8 × 10-2
  2. 2. Algebra

    Factorise: x² - 15x + 50

    Answer: (x - 5)(x - 10)
  3. 3. Geometry

    Hypotenuse = 18cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 8.73cm
  4. 4. Ratio

    In ratio 7:4:4, what fraction is the second part?

    Answer: 4⁄15
  5. 5. Statistics

    The mean of 5 numbers is 31. If 4 of them are 32, 37, 38, 20, what is the missing number?

    Answer: 28

Wednesday 20 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 6,700,000 in standard form

    Answer: 6.7 × 106
  2. 2. Algebra

    Factorise: x² - 10x + 16

    Answer: (x - 2)(x - 8)
  3. 3. Geometry

    Adjacent = 21cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 18.91cm
  4. 4. Ratio

    £189.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £54.00
  5. 5. Statistics

    Calculate the mean of: 46, 22, 23, 28, 47, 29

    Answer: 32.5

Thursday 21 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00078 in standard form

    Answer: 7.8 × 10-4
  2. 2. Algebra

    Factorise: x² - 2x - 8

    Answer: (x + 2)(x - 4)
  3. 3. Geometry

    Hypotenuse = 30cm, angle = 30°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.98cm
  4. 4. Ratio

    Simplify the ratio 2m : 25cm

    Answer: 8:1
  5. 5. Statistics

    The mean of 5 numbers is 31. If 4 of them are 26, 37, 44, 35, what is the missing number?

    Answer: 13

Friday 22 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 65,000 in standard form

    Answer: 6.5 × 104
  2. 2. Algebra

    Factorise: x² + 9x - 10

    Answer: (x + 10)(x - 1)
  3. 3. Geometry

    Adjacent = 11cm, angle = 49°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

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

    Answer: £66.00
  5. 5. Statistics

    The mean of 4 numbers is 27. If 3 of them are 36, 16, 40, what is the missing number?

    Answer: 16