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Lintel Oct 29 - Nov 4 25 questions
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Monday 29 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0087 in standard form

    Answer: 8.7 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 72

    Answer: (x + 9)(x - 8)
  3. 3. Geometry

    Adjacent = 17cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 26.18cm
  4. 4. Ratio

    Black, white and yellow counters are in the ratio 6:4:8. What fraction of the counters are yellow?

    Answer: 4⁄9
  5. 5. Statistics

    The mean of 6 numbers is 37. If 5 of them are 47, 25, 34, 50, 27, what is the missing number?

    Answer: 39

Tuesday 30 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0081 in standard form

    Answer: 8.1 × 10-3
  2. 2. Algebra

    Factorise: x² + 7x - 8

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

    Hypotenuse = 37cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 23.78cm
  4. 4. Ratio

    £232.00 is shared between A and B in the ratio 3:5. How much does A receive?

    Answer: £87.00
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 32, 30, 40, 48, 17, what is the missing number?

    Answer: 13

Wednesday 31 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 9,200,000 in standard form

    Answer: 9.2 × 106
  2. 2. Algebra

    Factorise: x² - 5x - 14

    Answer: (x + 2)(x - 7)
  3. 3. Geometry

    Adjacent = 13cm, angle = 38°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.16cm
  4. 4. Ratio

    In ratio 9:7:4, what fraction is the first part?

    Answer: 9⁄20
  5. 5. Statistics

    Calculate the mean of: 35, 39, 11, 33, 48, 29, 10. Give your answer to 2 decimal places

    Answer: 29.29

Thursday 1 November 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 51,000,000 in standard form

    Answer: 5.1 × 107
  2. 2. Algebra

    Factorise: x² + 9x - 10

    Answer: (x + 10)(x - 1)
  3. 3. Geometry

    Adjacent = 23cm, angle = 45°. Find opposite

    Answer: 23cm
  4. 4. Ratio

    £270.00 is shared between A and B in the ratio 2:1. How much does A receive?

    Answer: £180.00
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 38, 40, 24, what is the missing number?

    Answer: 50

Friday 2 November 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000031 in standard form

    Answer: 3.1 × 10-5
  2. 2. Algebra

    Factorise: x² + 6x + 9

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

    Hypotenuse = 37cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.37cm
  4. 4. Ratio

    £230.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £92.00
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 18, 23, 45, 31, what is the missing number?

    Answer: 68