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Lintel Jun 24 - 30 25 questions
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Monday 24 June 2013

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 + 19x + 84

    Answer: (x + 12)(x + 7)
  3. 3. Geometry

    Hypotenuse = 34cm, angle = 40°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 26.05cm
  4. 4. Ratio

    Black and white marbles are in the ratio 12:13. What fraction of the marbles are white?

    Answer: 13⁄25
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 35, 42, 17, what is the missing number?

    Answer: 62

Tuesday 25 June 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0061 in standard form

    Answer: 6.1 × 10-3
  2. 2. Algebra

    Factorise: x² + 4x - 21

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

    Adjacent = 10cm, angle = 40°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.39cm
  4. 4. Ratio

    Simplify: 15:12:18

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

    Calculate the mean of: 31, 17, 39, 47, 28, 25, 35. Give your answer to 2 decimal places

    Answer: 31.71

Wednesday 26 June 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 35,000 in standard form

    Answer: 3.5 × 104
  2. 2. Algebra

    Factorise: x² + 6x - 16

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

    Hypotenuse = 38cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 31.13cm
  4. 4. Ratio

    Simplify: 10:4:8

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

    Calculate the mean of: 21, 25, 19, 49, 36, 22, 50. Give your answer to 2 decimal places

    Answer: 31.71

Thursday 27 June 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0014 in standard form

    Answer: 1.4 × 10-3
  2. 2. Algebra

    Factorise: x² + 5x - 24

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

    Adjacent = 14cm, angle = 53°. Find opposite. Give your answer to 2 decimal places

    Answer: 18.58cm
  4. 4. Ratio

    Simplify: 12:9:15

    Answer: 4:3:5
  5. 5. Statistics

    The mean of 4 numbers is 35. If 3 of them are 43, 17, 47, what is the missing number?

    Answer: 33

Friday 28 June 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0086 in standard form

    Answer: 8.6 × 10-3
  2. 2. Algebra

    Factorise: x² - 7x - 8

    Answer: (x + 1)(x - 8)
  3. 3. Geometry

    Adjacent = 18cm, angle = 40°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.cm
  4. 4. Ratio

    Simplify: 8:4:6

    Answer: 4:2:3
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 48, 27, 17, what is the missing number?

    Answer: 36