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Lintel Dec 20 - 26 25 questions
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Monday 20 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 310,000 in standard form

    Answer: 3.1 × 105
  2. 2. Algebra

    Factorise: x² - 2x - 80

    Answer: (x + 8)(x - 10)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 36°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 22.65cm
  4. 4. Ratio

    £234.00 is shared between A and B in the ratio 1:2. How much does A receive?

    Answer: £78.00
  5. 5. Statistics

    Calculate the mean of: 25, 39, 10, 49, 25, 13, 8. Give your answer to 2 decimal places

    Answer: 24.14

Tuesday 21 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00063 in standard form

    Answer: 6.3 × 10-4
  2. 2. Algebra

    Factorise: x² + 19x + 88

    Answer: (x + 11)(x + 8)
  3. 3. Geometry

    Adjacent = 23cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.37cm
  4. 4. Ratio

    Black, white and yellow sweets are in the ratio 2:9:2. What fraction of the sweets are white?

    Answer: 9⁄13
  5. 5. Statistics

    The mean of 4 numbers is 33. If 3 of them are 24, 50, 37, what is the missing number?

    Answer: 21

Wednesday 22 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 680,000 in standard form

    Answer: 6.8 × 105
  2. 2. Algebra

    Factorise: x² + 11x - 12

    Answer: (x + 12)(x - 1)
  3. 3. Geometry

    Hypotenuse = 37cm, angle = 45°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 26.16cm
  4. 4. Ratio

    Black, white and yellow sweets are in the ratio 12:1:10. What fraction of the sweets are yellow?

    Answer: 10⁄23
  5. 5. Statistics

    The mean of 4 numbers is 35. If 3 of them are 45, 21, 49, what is the missing number?

    Answer: 25

Thursday 23 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000091 in standard form

    Answer: 9.1 × 10-5
  2. 2. Algebra

    Factorise: x² + 3x - 54

    Answer: (x + 9)(x - 6)
  3. 3. Geometry

    Adjacent = 18cm, angle = 43°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.79cm
  4. 4. Ratio

    £294.00 is shared between A and B in the ratio 2:5. How much does A receive?

    Answer: £84.00
  5. 5. Statistics

    Calculate the mean of: 27, 37, 42, 9, 48, 9, 32. Give your answer to 2 decimal places

    Answer: 29.14

Friday 24 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00034 in standard form

    Answer: 3.4 × 10-4
  2. 2. Algebra

    Factorise: x² - 6x - 40

    Answer: (x + 4)(x - 10)
  3. 3. Geometry

    Adjacent = 16cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.85cm
  4. 4. Ratio

    Express the first part of 2:4 as a fraction in simplest form

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 4 numbers is 31. If 3 of them are 27, 50, 34, what is the missing number?

    Answer: 13