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Lintel Sep 3 - 9 25 questions
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Monday 3 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0094 in standard form

    Answer: 9.4 × 10-3
  2. 2. Algebra

    Factorise: x² - 2x - 63

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

    Hypotenuse = 27cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 22.9cm
  4. 4. Ratio

    Simplify the ratio 2m : 65cm

    Answer: 40:13
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 44, 46, 18, 47, what is the missing number?

    Answer: 10

Tuesday 4 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0008 in standard form

    Answer: 8 × 10-4
  2. 2. Algebra

    Factorise: x² + 9x + 14

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

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

    Answer: 31.72cm
  4. 4. Ratio

    Express the second part of 11:10 as a fraction in simplest form

    Answer: 10⁄21
  5. 5. Statistics

    Calculate the mean of: 50, 18, 29, 22, 42, 40, 20, 14. Give your answer to 2 decimal places

    Answer: 29.38

Wednesday 5 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 32,000 in standard form

    Answer: 3.2 × 104
  2. 2. Algebra

    Factorise: x² - 2x - 3

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

    Adjacent = 27cm, angle = 40°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.66cm
  4. 4. Ratio

    Simplify: 12:15:6

    Answer: 4:5:2
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 26, 17, 39, what is the missing number?

    Answer: 38

Thursday 6 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0022 in standard form

    Answer: 2.2 × 10-3
  2. 2. Algebra

    Factorise: x² - 6x - 7

    Answer: (x + 1)(x - 7)
  3. 3. Geometry

    Hypotenuse = 20cm, angle = 39°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.54cm
  4. 4. Ratio

    Red and blue beads are in the ratio 15:13. What fraction of the beads are red?

    Answer: 15⁄28
  5. 5. Statistics

    The mean of 5 numbers is 31. If 4 of them are 34, 21, 46, 46, what is the missing number?

    Answer: 8

Friday 7 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 620,000,000 in standard form

    Answer: 6.2 × 108
  2. 2. Algebra

    Factorise: x² - x - 6

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

    Adjacent = 15cm, angle = 30°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.66cm
  4. 4. Ratio

    Divide 100 in the ratio 1:2:2

    Answer: 20, 40 and 40
  5. 5. Statistics

    Calculate the mean of: 8, 23, 47, 29, 11, 30, 33, 48. Give your answer to 2 decimal places

    Answer: 28.63