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Lintel Dec 9 - 15 25 questions
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Monday 9 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00043 in standard form

    Answer: 4.3 × 10-4
  2. 2. Algebra

    Factorise: x² + 16x + 64

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

    Hypotenuse = 34cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 24.46cm
  4. 4. Ratio

    Orange, purple and pink counters are in the ratio 9:3:10. What fraction of the counters are purple?

    Answer: 3⁄22
  5. 5. Statistics

    Calculate the mean of: 8, 28, 11, 26, 23, 12, 45, 29

    Answer: 22.75

Tuesday 10 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000042 in standard form

    Answer: 4.2 × 10-5
  2. 2. Algebra

    Factorise: x² - 7x - 30

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

    Adjacent = 25cm, angle = 43°. Find opposite. Give your answer to 2 decimal places

    Answer: 23.31cm
  4. 4. Ratio

    £185.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £74.00
  5. 5. Statistics

    Calculate the mean of: 37, 39, 8, 35, 9, 11, 10. Give your answer to 2 decimal places

    Answer: 21.29

Wednesday 11 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 6,800,000 in standard form

    Answer: 6.8 × 106
  2. 2. Algebra

    Factorise: x² + x - 72

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

    Hypotenuse = 28cm, angle = 43°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 20.48cm
  4. 4. Ratio

    In ratio 1:12:8, what fraction is the second part?

    Answer: 4⁄7
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 46, 33, 35, what is the missing number?

    Answer: 42

Thursday 12 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.025 in standard form

    Answer: 2.5 × 10-2
  2. 2. Algebra

    Factorise: x² + 6x - 40

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

    Adjacent = 19cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.64cm
  4. 4. Ratio

    In ratio 6:10:11, what fraction is the first part?

    Answer: 2⁄9
  5. 5. Statistics

    The mean of 5 numbers is 36. If 4 of them are 50, 24, 34, 18, what is the missing number?

    Answer: 54

Friday 13 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 390,000,000 in standard form

    Answer: 3.9 × 108
  2. 2. Algebra

    Factorise: x² - 22x + 121

    Answer: (x - 11)(x - 11)
  3. 3. Geometry

    Hypotenuse = 26cm, angle = 34°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.55cm
  4. 4. Ratio

    Orange, purple and pink sweets are in the ratio 3:8:10. What fraction of the sweets are orange?

    Answer: 1⁄7
  5. 5. Statistics

    Calculate the mean of: 22, 20, 8, 37, 5, 14, 31. Give your answer to 2 decimal places

    Answer: 19.57