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Lintel Sep 26 - Oct 2 25 questions
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Monday 26 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00025 in standard form

    Answer: 2.5 × 10-4
  2. 2. Algebra

    Factorise: x² - 3x - 40

    Answer: (x + 5)(x - 8)
  3. 3. Geometry

    Adjacent = 15cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.51cm
  4. 4. Ratio

    Simplify the ratio 5 hours : 55 minutes

    Answer: 60:11
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 33, 35, 43, 26, what is the missing number?

    Answer: 33

Tuesday 27 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 66,000,000 in standard form

    Answer: 6.6 × 107
  2. 2. Algebra

    Factorise: x² + 7x - 60

    Answer: (x + 12)(x - 5)
  3. 3. Geometry

    Hypotenuse = 16cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 13.99cm
  4. 4. Ratio

    £296.00 is shared between A and B in the ratio 3:5. How much does A receive?

    Answer: £111.00
  5. 5. Statistics

    Calculate the mean of: 11, 22, 40, 25, 13, 36

    Answer: 24.5

Wednesday 28 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 8,700,000 in standard form

    Answer: 8.7 × 106
  2. 2. Algebra

    Factorise: x² - 5x - 66

    Answer: (x + 6)(x - 11)
  3. 3. Geometry

    Hypotenuse = 30cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 20.46cm
  4. 4. Ratio

    Simplify the ratio 5kg : 150g

    Answer: 100:3
  5. 5. Statistics

    Calculate the mean of: 40, 34, 23, 34, 27, 5, 38, 31

    Answer: 29

Thursday 29 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000098 in standard form

    Answer: 9.8 × 10-5
  2. 2. Algebra

    Factorise: x² + x - 6

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

    Adjacent = 30cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 37.05cm
  4. 4. Ratio

    Red, blue and green counters are in the ratio 10:4:3. What fraction of the counters are green?

    Answer: 3⁄17
  5. 5. Statistics

    The mean of 5 numbers is 29. If 4 of them are 39, 27, 24, 23, what is the missing number?

    Answer: 32

Friday 30 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00029 in standard form

    Answer: 2.9 × 10-4
  2. 2. Algebra

    Factorise: x² - x - 20

    Answer: (x + 4)(x - 5)
  3. 3. Geometry

    Hypotenuse = 39cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 33.43cm
  4. 4. Ratio

    In ratio 8:12:5, what fraction is the first part?

    Answer: 8⁄25
  5. 5. Statistics

    The mean of 5 numbers is 26. If 4 of them are 21, 26, 24, 30, what is the missing number?

    Answer: 29