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Lintel Oct 3 - 9 25 questions
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Monday 3 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0077 in standard form

    Answer: 7.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 12x + 27

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

    Hypotenuse = 27cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.56cm
  4. 4. Ratio

    Simplify the ratio 4 hours : 45 minutes

    Answer: 16:3
  5. 5. Statistics

    The mean of 4 numbers is 31. If 3 of them are 24, 32, 34, what is the missing number?

    Answer: 34

Tuesday 4 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000079 in standard form

    Answer: 7.9 × 10-5
  2. 2. Algebra

    Factorise: x² + 5x - 24

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

    Hypotenuse = 32cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.03cm
  4. 4. Ratio

    Divide 80 in the ratio 1:4:3

    Answer: 10, 40 and 30
  5. 5. Statistics

    Calculate the mean of: 42, 15, 12, 23, 32, 9, 45, 29. Give your answer to 2 decimal places

    Answer: 25.88

Wednesday 5 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 410,000,000 in standard form

    Answer: 4.1 × 108
  2. 2. Algebra

    Factorise: x² + x - 90

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

    Adjacent = 10cm, angle = 44°. Find opposite. Give your answer to 2 decimal places

    Answer: 9.66cm
  4. 4. Ratio

    Simplify: 9:6:15

    Answer: 3:2:5
  5. 5. Statistics

    The mean of 6 numbers is 33. If 5 of them are 33, 33, 43, 26, 29, what is the missing number?

    Answer: 34

Thursday 6 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000039 in standard form

    Answer: 3.9 × 10-5
  2. 2. Algebra

    Factorise: x² + 5x - 6

    Answer: (x + 6)(x - 1)
  3. 3. Geometry

    Hypotenuse = 27cm, angle = 60°. Find adjacent side

    Answer: 13.5cm
  4. 4. Ratio

    Express the second part of 8:15 as a fraction in simplest form

    Answer: 15⁄23
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 16, 38, 34, 22, what is the missing number?

    Answer: 55

Friday 7 October 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 5,300,000 in standard form

    Answer: 5.3 × 106
  2. 2. Algebra

    Factorise: x² + 22x + 120

    Answer: (x + 12)(x + 10)
  3. 3. Geometry

    Adjacent = 19cm, angle = 30°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.97cm
  4. 4. Ratio

    Simplify: 6:15:18

    Answer: 2:5:6
  5. 5. Statistics

    Calculate the mean of: 49, 30, 41, 37, 19, 43, 31, 6

    Answer: 32