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Lintel Sep 12 - 18 25 questions
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Monday 12 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 1,400,000 in standard form

    Answer: 1.4 × 106
  2. 2. Algebra

    Factorise: x² - 9x + 14

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

    Hypotenuse = 29cm, angle = 42°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.55cm
  4. 4. Ratio

    £405.00 is shared between A and B in the ratio 5:4. How much does A receive?

    Answer: £225.00
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 36, 38, 46, 21, what is the missing number?

    Answer: 39

Tuesday 13 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000051 in standard form

    Answer: 5.1 × 10-5
  2. 2. Algebra

    Factorise: x² - x - 90

    Answer: (x + 9)(x - 10)
  3. 3. Geometry

    Adjacent = 20cm, angle = 40°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.78cm
  4. 4. Ratio

    Orange, purple and pink counters are in the ratio 11:8:1. What fraction of the counters are purple?

    Answer: 2⁄5
  5. 5. Statistics

    Calculate the mean of: 23, 40, 20, 35, 39, 41, 29. Give your answer to 2 decimal places

    Answer: 32.43

Wednesday 14 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0026 in standard form

    Answer: 2.6 × 10-3
  2. 2. Algebra

    Factorise: x² - 2x - 3

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

    Adjacent = 11cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.31cm
  4. 4. Ratio

    Simplify: 24:16:20

    Answer: 6:4:5
  5. 5. Statistics

    The mean of 5 numbers is 22. If 4 of them are 18, 48, 19, 17, what is the missing number?

    Answer: 8

Thursday 15 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 6,700,000 in standard form

    Answer: 6.7 × 106
  2. 2. Algebra

    Factorise: x² + 11x + 10

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

    Hypotenuse = 17cm, angle = 42°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.63cm
  4. 4. Ratio

    Express the first part of 15:5 as a fraction in simplest form

    Answer: 3⁄4
  5. 5. Statistics

    Calculate the mean of: 7, 17, 40, 5, 30, 40, 41. Give your answer to 2 decimal places

    Answer: 25.71

Friday 16 September 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0006 in standard form

    Answer: 6 × 10-4
  2. 2. Algebra

    Factorise: x² - 5x - 24

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

    Adjacent = 22cm, angle = 59°. Find opposite. Give your answer to 2 decimal places

    Answer: 36.61cm
  4. 4. Ratio

    Orange and purple sweets are in the ratio 5:6. What fraction of the sweets are orange?

    Answer: 5⁄11
  5. 5. Statistics

    Calculate the mean of: 31, 25, 15, 18, 6, 16, 12, 49

    Answer: 21.5