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Lintel Oct 1 - 7 25 questions
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Monday 1 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 970,000 in standard form

    Answer: 9.7 × 105
  2. 2. Algebra

    Factorise: x² - 2x - 15

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

    Adjacent = 30cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 27.01cm
  4. 4. Ratio

    Black and white counters are in the ratio 9:2. What fraction of the counters are white?

    Answer: 2⁄11
  5. 5. Statistics

    The mean of 4 numbers is 33. If 3 of them are 31, 30, 40, what is the missing number?

    Answer: 31

Tuesday 2 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000087 in standard form

    Answer: 8.7 × 10-5
  2. 2. Algebra

    Factorise: x² + x - 56

    Answer: (x + 8)(x - 7)
  3. 3. Geometry

    Hypotenuse = 34cm, angle = 63°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.44cm
  4. 4. Ratio

    Express the second part of 10:6 as a fraction in simplest form

    Answer: 3⁄8
  5. 5. Statistics

    The mean of 6 numbers is 28. If 5 of them are 28, 26, 23, 40, 35, what is the missing number?

    Answer: 16

Wednesday 3 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 180,000 in standard form

    Answer: 1.8 × 105
  2. 2. Algebra

    Factorise: x² - 5x - 66

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

    Adjacent = 20cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 18.01cm
  4. 4. Ratio

    Divide 48 in the ratio 2:1:1

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

    Calculate the mean of: 13, 44, 45, 6, 28, 47, 6, 25

    Answer: 26.75

Thursday 4 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 69,000,000 in standard form

    Answer: 6.9 × 107
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Adjacent = 21cm, angle = 37°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.82cm
  4. 4. Ratio

    Simplify the ratio 5kg : 850g

    Answer: 100:17
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 30, 44, 46, 45, what is the missing number?

    Answer: 20

Friday 5 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00085 in standard form

    Answer: 8.5 × 10-4
  2. 2. Algebra

    Factorise: x² + 5x - 6

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

    Hypotenuse = 17cm, angle = 52°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.47cm
  4. 4. Ratio

    Simplify the ratio kg : 550g

    Answer: 20:11
  5. 5. Statistics

    Calculate the mean of: 44, 49, 27, 9, 50, 48, 27, 7. Give your answer to 2 decimal places

    Answer: 32.63