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Lintel Oct 21 - 27 25 questions
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Monday 21 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 610,000 in standard form

    Answer: 6.1 × 105
  2. 2. Algebra

    Factorise: x² + x - 72

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

    Adjacent = 27cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 32.18cm
  4. 4. Ratio

    Divide 104 in the ratio 1:2:1

    Answer: 26, 52 and 26
  5. 5. Statistics

    Calculate the mean of: 13, 33, 28, 20, 35, 47. Give your answer to 2 decimal places

    Answer: 29.33

Tuesday 22 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0032 in standard form

    Answer: 3.2 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 30

    Answer: (x + 6)(x - 5)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 27.43cm
  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: 15, 14, 45, 23, 19, 28, 8, 39. Give your answer to 2 decimal places

    Answer: 23.88

Wednesday 23 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 27,000,000 in standard form

    Answer: 2.7 × 107
  2. 2. Algebra

    Factorise: x² - 9x - 36

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

    Adjacent = 28cm, angle = 59°. Find opposite. Give your answer to 2 decimal places

    Answer: 46.6cm
  4. 4. Ratio

    Black and white marbles are in the ratio 7:9. What fraction of the marbles are black?

    Answer: 7⁄16
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 38, 37, 45, what is the missing number?

    Answer: 8

Thursday 24 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 140,000,000 in standard form

    Answer: 1.4 × 108
  2. 2. Algebra

    Factorise: x² + 12x + 20

    Answer: (x + 10)(x + 2)
  3. 3. Geometry

    Adjacent = 26cm, angle = 60°. Find opposite. Give your answer to 2 decimal places

    Answer: 45.03cm
  4. 4. Ratio

    Simplify the ratio 2 hours : 30 minutes

    Answer: 4:1
  5. 5. Statistics

    Calculate the mean of: 38, 36, 44, 16, 47, 45. Give your answer to 2 decimal places

    Answer: 37.67

Friday 25 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00064 in standard form

    Answer: 6.4 × 10-4
  2. 2. Algebra

    Factorise: x² - 3x - 54

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

    Hypotenuse = 31cm, angle = 62°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.55cm
  4. 4. Ratio

    Simplify the ratio 3 litres : 550 ml

    Answer: 60:11
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 32, 37, 29, 21, what is the missing number?

    Answer: 66