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Lintel May 9 - 15 25 questions
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Monday 9 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000051 in standard form

    Answer: 5.1 × 10-5
  2. 2. Algebra

    Factorise: x² + x - 20

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

    Hypotenuse = 15cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.79cm
  4. 4. Ratio

    Express the second part of 11:9 as a fraction in simplest form

    Answer: 9⁄20
  5. 5. Statistics

    Calculate the mean of: 43, 7, 11, 38, 42, 46, 10, 28. Give your answer to 2 decimal places

    Answer: 28.13

Tuesday 10 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000013 in standard form

    Answer: 1.3 × 10-5
  2. 2. Algebra

    Factorise: x² - 5x - 36

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

    Adjacent = 10cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.4cm
  4. 4. Ratio

    Divide 210 in the ratio 2:2:3

    Answer: 60, 60 and 90
  5. 5. Statistics

    Calculate the mean of: 26, 45, 40, 20, 48, 46, 43, 8

    Answer: 34.5

Wednesday 11 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 650,000 in standard form

    Answer: 6.5 × 105
  2. 2. Algebra

    Factorise: x² - 12x + 11

    Answer: (x - 1)(x - 11)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 34°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.44cm
  4. 4. Ratio

    Red and blue counters are in the ratio 12:9. What fraction of the counters are red?

    Answer: 4⁄7
  5. 5. Statistics

    The mean of 4 numbers is 31. If 3 of them are 40, 15, 33, what is the missing number?

    Answer: 36

Thursday 12 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000084 in standard form

    Answer: 8.4 × 10-5
  2. 2. Algebra

    Factorise: x² + 16x + 63

    Answer: (x + 9)(x + 7)
  3. 3. Geometry

    Adjacent = 21cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.93cm
  4. 4. Ratio

    Simplify: 8:12:8

    Answer: 2:3:2
  5. 5. Statistics

    The mean of 5 numbers is 30. If 4 of them are 16, 18, 35, 39, what is the missing number?

    Answer: 42

Friday 13 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 11,000 in standard form

    Answer: 1.1 × 104
  2. 2. Algebra

    Factorise: x² - 3x - 10

    Answer: (x + 2)(x - 5)
  3. 3. Geometry

    Hypotenuse = 36cm, angle = 28°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 31.79cm
  4. 4. Ratio

    Simplify: 8:8:20

    Answer: 2:2:5
  5. 5. Statistics

    Calculate the mean of: 46, 17, 29, 45, 12, 27, 24, 10

    Answer: 26.25