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Lintel Oct 7 - 13 25 questions
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Monday 7 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 870,000 in standard form

    Answer: 8.7 × 105
  2. 2. Algebra

    Factorise: x² + 3x - 108

    Answer: (x + 12)(x - 9)
  3. 3. Geometry

    Hypotenuse = 19cm, angle = 45°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.44cm
  4. 4. Ratio

    £396.00 is shared between A and B in the ratio 4:5. How much does A receive?

    Answer: £176.00
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 50, 31, 20, what is the missing number?

    Answer: 27

Tuesday 8 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 56,000 in standard form

    Answer: 5.6 × 104
  2. 2. Algebra

    Factorise: x² + 13x + 12

    Answer: (x + 12)(x + 1)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.79cm
  4. 4. Ratio

    Simplify the ratio 2 litres : 50 ml

    Answer: 40:1
  5. 5. Statistics

    The mean of 4 numbers is 27. If 3 of them are 16, 43, 26, what is the missing number?

    Answer: 23

Wednesday 9 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00097 in standard form

    Answer: 9.7 × 10-4
  2. 2. Algebra

    Factorise: x² - 4x - 21

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

    Adjacent = 19cm, angle = 54°. Find opposite. Give your answer to 2 decimal places

    Answer: 26.15cm
  4. 4. Ratio

    £329.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £94.00
  5. 5. Statistics

    Calculate the mean of: 18, 30, 43, 18, 10, 38, 26, 28. Give your answer to 2 decimal places

    Answer: 26.38

Thursday 10 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0059 in standard form

    Answer: 5.9 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 90

    Answer: (x + 10)(x - 9)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 51°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 23.91cm
  4. 4. Ratio

    In ratio 10:6:9, what fraction is the third part?

    Answer: 9⁄25
  5. 5. Statistics

    Calculate the mean of: 26, 29, 46, 11, 36, 32, 21, 42. Give your answer to 2 decimal places

    Answer: 30.38

Friday 11 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 110,000 in standard form

    Answer: 1.1 × 105
  2. 2. Algebra

    Factorise: x² + 6x - 16

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

    Adjacent = 19cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 23.46cm
  4. 4. Ratio

    In ratio 6:12:2, what fraction is the third part?

    Answer: 1⁄10
  5. 5. Statistics

    The mean of 4 numbers is 24. If 3 of them are 28, 23, 15, what is the missing number?

    Answer: 30