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Lintel Nov 22 - 28 25 questions
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Monday 22 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 480,000,000 in standard form

    Answer: 4.8 × 108
  2. 2. Algebra

    Factorise: x² - 6x - 27

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

    Adjacent = 20cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.5cm
  4. 4. Ratio

    Red and blue sweets are in the ratio 5:14. What fraction of the sweets are blue?

    Answer: 14⁄19
  5. 5. Statistics

    The mean of 5 numbers is 24. If 4 of them are 19, 19, 18, 50, what is the missing number?

    Answer: 14

Tuesday 23 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.052 in standard form

    Answer: 5.2 × 10-2
  2. 2. Algebra

    Factorise: x² - 2x - 63

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

    Hypotenuse = 29cm, angle = 65°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.26cm
  4. 4. Ratio

    Divide 168 in the ratio 1:4:3

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

    Calculate the mean of: 42, 5, 44, 7, 18, 50. Give your answer to 2 decimal places

    Answer: 27.67

Wednesday 24 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000049 in standard form

    Answer: 4.9 × 10-5
  2. 2. Algebra

    Factorise: x² + x - 6

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

    Hypotenuse = 20cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.47cm
  4. 4. Ratio

    Orange, purple and pink sweets are in the ratio 8:11:6. What fraction of the sweets are purple?

    Answer: 11⁄25
  5. 5. Statistics

    The mean of 6 numbers is 38. If 5 of them are 42, 26, 35, 22, 38, what is the missing number?

    Answer: 65

Thursday 25 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 81,000 in standard form

    Answer: 8.1 × 104
  2. 2. Algebra

    Factorise: x² + 3x - 4

    Answer: (x + 4)(x - 1)
  3. 3. Geometry

    Adjacent = 10cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 9cm
  4. 4. Ratio

    In ratio 10:5:1, what fraction is the first part?

    Answer: 5⁄8
  5. 5. Statistics

    Calculate the mean of: 36, 29, 37, 33, 38, 46, 31, 17. Give your answer to 2 decimal places

    Answer: 33.38

Friday 26 November 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000034 in standard form

    Answer: 3.4 × 10-5
  2. 2. Algebra

    Factorise: x² - 16x + 64

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

    Hypotenuse = 27cm, angle = 51°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.99cm
  4. 4. Ratio

    £350.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £250.00
  5. 5. Statistics

    Calculate the mean of: 19, 37, 27, 13, 7, 19, 14. Give your answer to 2 decimal places

    Answer: 19.43