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Lintel Dec 10 - 16 25 questions
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Monday 10 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 32,000 in standard form

    Answer: 3.2 × 104
  2. 2. Algebra

    Factorise: x² - 2x - 35

    Answer: (x + 5)(x - 7)
  3. 3. Geometry

    Adjacent = 12cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 17.14cm
  4. 4. Ratio

    Black, white and yellow sweets are in the ratio 12:9:10. What fraction of the sweets are white?

    Answer: 9⁄31
  5. 5. Statistics

    Calculate the mean of: 46, 36, 25, 28, 17, 37

    Answer: 31.5

Tuesday 11 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000045 in standard form

    Answer: 4.5 × 10-5
  2. 2. Algebra

    Factorise: x² - 5x - 24

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

    Hypotenuse = 26cm, angle = 57°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.16cm
  4. 4. Ratio

    £224.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £160.00
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 46, 37, 26, 30, what is the missing number?

    Answer: 26

Wednesday 12 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 45,000,000 in standard form

    Answer: 4.5 × 107
  2. 2. Algebra

    Factorise: x² + 7x - 8

    Answer: (x + 8)(x - 1)
  3. 3. Geometry

    Adjacent = 28cm, angle = 51°. Find opposite. Give your answer to 2 decimal places

    Answer: 34.58cm
  4. 4. Ratio

    Simplify the ratio 3kg : 850g

    Answer: 60:17
  5. 5. Statistics

    The mean of 5 numbers is 32. If 4 of them are 44, 18, 23, 48, what is the missing number?

    Answer: 27

Thursday 13 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0068 in standard form

    Answer: 6.8 × 10-3
  2. 2. Algebra

    Factorise: x² + 3x - 18

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

    Hypotenuse = 26cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 20.76cm
  4. 4. Ratio

    £304.00 is shared between A and B in the ratio 5:3. How much does A receive?

    Answer: £190.00
  5. 5. Statistics

    Calculate the mean of: 16, 16, 20, 30, 33, 8, 50, 28. Give your answer to 2 decimal places

    Answer: 25.13

Friday 14 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0009 in standard form

    Answer: 9 × 10-4
  2. 2. Algebra

    Factorise: x² - 6x - 16

    Answer: (x + 2)(x - 8)
  3. 3. Geometry

    Hypotenuse = 27cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.27cm
  4. 4. Ratio

    Divide 125 in the ratio 1:2:2

    Answer: 25, 50 and 50
  5. 5. Statistics

    The mean of 6 numbers is 39. If 5 of them are 16, 50, 41, 42, 50, what is the missing number?

    Answer: 35