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Lintel Jun 9 - 15 25 questions
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Monday 9 June 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.077 in standard form

    Answer: 7.7 × 10-2
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 20cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.38cm
  4. 4. Ratio

    Express the second part of 4:2 as a fraction in simplest form

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 20, 41, 18, what is the missing number?

    Answer: 49

Tuesday 10 June 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000034 in standard form

    Answer: 3.4 × 10-5
  2. 2. Algebra

    Factorise: x² - 9x - 10

    Answer: (x + 1)(x - 10)
  3. 3. Geometry

    Adjacent = 26cm, angle = 46°. Find opposite. Give your answer to 2 decimal places

    Answer: 26.92cm
  4. 4. Ratio

    Divide 200 in the ratio 3:3:2

    Answer: 75, 75 and 50
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 45, 17, 20, what is the missing number?

    Answer: 38

Wednesday 11 June 2014

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 - 90

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

    Hypotenuse = 27cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.36cm
  4. 4. Ratio

    Simplify: 8:8:10

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

    Calculate the mean of: 29, 22, 40, 44, 11, 12, 29, 28. Give your answer to 2 decimal places

    Answer: 26.88

Thursday 12 June 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0012 in standard form

    Answer: 1.2 × 10-3
  2. 2. Algebra

    Factorise: x² + 4x - 60

    Answer: (x + 10)(x - 6)
  3. 3. Geometry

    Adjacent = 13cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.02cm
  4. 4. Ratio

    Simplify: 4:6:6

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

    Calculate the mean of: 17, 27, 21, 20, 42, 24, 33. Give your answer to 2 decimal places

    Answer: 26.29

Friday 13 June 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 280,000,000 in standard form

    Answer: 2.8 × 108
  2. 2. Algebra

    Factorise: x² - 5x - 6

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

    Hypotenuse = 38cm, angle = 63°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.25cm
  4. 4. Ratio

    Black and white marbles are in the ratio 11:3. What fraction of the marbles are white?

    Answer: 3⁄14
  5. 5. Statistics

    The mean of 6 numbers is 32. If 5 of them are 34, 34, 29, 18, 27, what is the missing number?

    Answer: 50