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Lintel Aug 18 - 24 25 questions
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Monday 18 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 490,000,000 in standard form

    Answer: 4.9 × 108
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Adjacent = 10cm, angle = 38°. Find opposite. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio

    Orange and purple marbles are in the ratio 4:14. What fraction of the marbles are purple?

    Answer: 7⁄9
  5. 5. Statistics

    Calculate the mean of: 20, 40, 5, 39, 50, 28, 12, 19. Give your answer to 2 decimal places

    Answer: 26.63

Tuesday 19 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00075 in standard form

    Answer: 7.5 × 10-4
  2. 2. Algebra

    Factorise: x² - 7x - 30

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

    Hypotenuse = 17cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.23cm
  4. 4. Ratio

    Simplify: 12:12:15

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

    The mean of 6 numbers is 26. If 5 of them are 18, 25, 46, 17, 24, what is the missing number?

    Answer: 26

Wednesday 20 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 820,000 in standard form

    Answer: 8.2 × 105
  2. 2. Algebra

    Factorise: x² - 14x + 49

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

    Adjacent = 11cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.31cm
  4. 4. Ratio

    Divide 168 in the ratio 3:4:1

    Answer: 63, 84 and 21
  5. 5. Statistics

    Calculate the mean of: 39, 46, 26, 25, 26, 41, 40. Give your answer to 2 decimal places

    Answer: 34.71

Thursday 21 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0034 in standard form

    Answer: 3.4 × 10-3
  2. 2. Algebra

    Factorise: x² + 5x - 50

    Answer: (x + 10)(x - 5)
  3. 3. Geometry

    Hypotenuse = 36cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.78cm
  4. 4. Ratio

    Divide 150 in the ratio 4:3:3

    Answer: 60, 45 and 45
  5. 5. Statistics

    The mean of 6 numbers is 34. If 5 of them are 40, 43, 35, 42, 29, what is the missing number?

    Answer: 15

Friday 22 August 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 1,400,000 in standard form

    Answer: 1.4 × 106
  2. 2. Algebra

    Factorise: x² + x - 6

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

    Adjacent = 17cm, angle = 53°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.56cm
  4. 4. Ratio

    Express the first part of 8:12 as a fraction in simplest form

    Answer: 2⁄5
  5. 5. Statistics

    The mean of 4 numbers is 21. If 3 of them are 23, 16, 29, what is the missing number?

    Answer: 16