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Lintel Jul 5 - 11 25 questions
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Monday 5 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0073 in standard form

    Answer: 7.3 × 10-3
  2. 2. Algebra

    Factorise: x² - 6x + 8

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

    Hypotenuse = 21cm, angle = 59°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio

    Simplify: 15:18:12

    Answer: 5:6:4
  5. 5. Statistics

    Calculate the mean of: 44, 30, 13, 42, 37, 13, 5, 19. Give your answer to 2 decimal places

    Answer: 25.38

Tuesday 6 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 22,000 in standard form

    Answer: 2.2 × 104
  2. 2. Algebra

    Factorise: x² - 10x - 24

    Answer: (x + 2)(x - 12)
  3. 3. Geometry

    Adjacent = 24cm, angle = 60°. Find opposite. Give your answer to 2 decimal places

    Answer: 41.57cm
  4. 4. Ratio

    Divide 88 in the ratio 1:1:2

    Answer: 22, 22 and 44
  5. 5. Statistics

    Calculate the mean of: 15, 34, 32, 12, 7, 41

    Answer: 23.5

Wednesday 7 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000089 in standard form

    Answer: 8.9 × 10-5
  2. 2. Algebra

    Factorise: x² + 5x - 6

    Answer: (x + 6)(x - 1)
  3. 3. Geometry

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

    Answer: 12.96cm
  4. 4. Ratio

    Simplify: 10:10:6

    Answer: 5:5:3
  5. 5. Statistics

    The mean of 6 numbers is 29. If 5 of them are 18, 43, 24, 21, 35, what is the missing number?

    Answer: 33

Thursday 8 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0074 in standard form

    Answer: 7.4 × 10-3
  2. 2. Algebra

    Factorise: x² - 5x - 36

    Answer: (x + 4)(x - 9)
  3. 3. Geometry

    Hypotenuse = 22cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 18.66cm
  4. 4. Ratio

    Simplify: 20:20:12

    Answer: 5:5:3
  5. 5. Statistics

    The mean of 5 numbers is 32. If 4 of them are 29, 15, 37, 38, what is the missing number?

    Answer: 41

Friday 9 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 750,000 in standard form

    Answer: 7.5 × 105
  2. 2. Algebra

    Factorise: x² - 21x + 108

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

    Adjacent = 27cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.87cm
  4. 4. Ratio

    Black and white counters are in the ratio 7:9. What fraction of the counters are white?

    Answer: 9⁄16
  5. 5. Statistics

    Calculate the mean of: 32, 41, 30, 20, 12, 25, 50, 45. Give your answer to 2 decimal places

    Answer: 31.88