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Lintel Jul 12 - 18 25 questions
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Monday 12 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 380,000,000 in standard form

    Answer: 3.8 × 108
  2. 2. Algebra

    Factorise: x² + 2x - 24

    Answer: (x + 6)(x - 4)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 27°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 33.86cm
  4. 4. Ratio

    Simplify: 15:18:15

    Answer: 5:6:5
  5. 5. Statistics

    The mean of 4 numbers is 40. If 3 of them are 36, 33, 21, what is the missing number?

    Answer: 70

Tuesday 13 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00065 in standard form

    Answer: 6.5 × 10-4
  2. 2. Algebra

    Factorise: x² - 7x - 18

    Answer: (x + 2)(x - 9)
  3. 3. Geometry

    Adjacent = 12cm, angle = 47°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.87cm
  4. 4. Ratio

    Black and white counters are in the ratio 10:3. What fraction of the counters are black?

    Answer: 10⁄13
  5. 5. Statistics

    Calculate the mean of: 40, 48, 25, 50, 6, 8

    Answer: 29.5

Wednesday 14 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00096 in standard form

    Answer: 9.6 × 10-4
  2. 2. Algebra

    Factorise: x² + 6x - 55

    Answer: (x + 11)(x - 5)
  3. 3. Geometry

    Adjacent = 22cm, angle = 39°. Find opposite. Give your answer to 2 decimal places

    Answer: 17.82cm
  4. 4. Ratio

    £175.00 is shared between A and B in the ratio 3:2. How much does A receive?

    Answer: £105.00
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 45, 22, 41, what is the missing number?

    Answer: 36

Thursday 15 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 350,000 in standard form

    Answer: 3.5 × 105
  2. 2. Algebra

    Factorise: x² + 7x - 18

    Answer: (x + 9)(x - 2)
  3. 3. Geometry

    Hypotenuse = 23cm, angle = 45°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.26cm
  4. 4. Ratio

    Orange, purple and pink sweets are in the ratio 1:2:2. What fraction of the sweets are purple?

    Answer: 2⁄5
  5. 5. Statistics

    Calculate the mean of: 43, 8, 44, 14, 36, 44, 44, 15

    Answer: 31

Friday 16 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.086 in standard form

    Answer: 8.6 × 10-2
  2. 2. Algebra

    Factorise: x² - 3x - 70

    Answer: (x + 7)(x - 10)
  3. 3. Geometry

    Adjacent = 29cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 42.99cm
  4. 4. Ratio

    Simplify the ratio £8 : 40p

    Answer: 20:1
  5. 5. Statistics

    Calculate the mean of: 47, 32, 33, 41, 19, 49. Give your answer to 2 decimal places

    Answer: 36.83