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Lintel Jun 14 - 20 25 questions
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Monday 14 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0024 in standard form

    Answer: 2.4 × 10-3
  2. 2. Algebra

    Factorise: x² + 4x - 12

    Answer: (x + 6)(x - 2)
  3. 3. Geometry

    Adjacent = 19cm, angle = 52°. Find opposite. Give your answer to 2 decimal places

    Answer: 24.32cm
  4. 4. Ratio

    Express the first part of 7:15 as a fraction in simplest form

    Answer: 7⁄22
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 40, 46, 20, 41, 23, what is the missing number?

    Answer: 10

Tuesday 15 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 74,000,000 in standard form

    Answer: 7.4 × 107
  2. 2. Algebra

    Factorise: x² + 13x + 30

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

    Hypotenuse = 22cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.93cm
  4. 4. Ratio

    Express the second part of 15:3 as a fraction in simplest form

    Answer: 1⁄6
  5. 5. Statistics

    Calculate the mean of: 25, 12, 33, 24, 20, 37, 11. Give your answer to 2 decimal places

    Answer: 23.14

Wednesday 16 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0071 in standard form

    Answer: 7.1 × 10-3
  2. 2. Algebra

    Factorise: x² + 10x + 16

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

    Adjacent = 21cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 32.34cm
  4. 4. Ratio

    Simplify: 8:6:8

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

    Calculate the mean of: 27, 19, 18, 30, 11, 12, 44, 46. Give your answer to 2 decimal places

    Answer: 25.88

Thursday 17 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 57,000,000 in standard form

    Answer: 5.7 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 63

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

    Hypotenuse = 28cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.49cm
  4. 4. Ratio

    Divide 60 in the ratio 2:2:1

    Answer: 24, 24 and 12
  5. 5. Statistics

    The mean of 4 numbers is 20. If 3 of them are 17, 41, 17, what is the missing number?

    Answer: 5

Friday 18 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 910,000 in standard form

    Answer: 9.1 × 105
  2. 2. Algebra

    Factorise: x² - 2x - 8

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

    Hypotenuse = 21cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 9.86cm
  4. 4. Ratio

    Orange and purple sweets are in the ratio 12:15. What fraction of the sweets are orange?

    Answer: 4⁄9
  5. 5. Statistics

    The mean of 6 numbers is 33. If 5 of them are 25, 50, 47, 39, 30, what is the missing number?

    Answer: 7