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Lintel Apr 15 - 21 25 questions
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Monday 15 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00078 in standard form

    Answer: 7.8 × 10-4
  2. 2. Algebra

    Factorise: x² - 7x - 18

    Answer: (x + 2)(x - 9)
  3. 3. Geometry

    Hypotenuse = 17cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 9.01cm
  4. 4. Ratio

    In ratio 4:3:2, what fraction is the second part?

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 6 numbers is 29. If 5 of them are 18, 24, 20, 19, 43, what is the missing number?

    Answer: 50

Tuesday 16 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 450,000 in standard form

    Answer: 4.5 × 105
  2. 2. Algebra

    Factorise: x² - 4x - 60

    Answer: (x + 6)(x - 10)
  3. 3. Geometry

    Adjacent = 28cm, angle = 49°. Find opposite. Give your answer to 2 decimal places

    Answer: 32.21cm
  4. 4. Ratio

    £450.00 is shared between A and B in the ratio 4:5. How much does A receive?

    Answer: £200.00
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 18, 46, 25, 32, what is the missing number?

    Answer: 44

Wednesday 17 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.066 in standard form

    Answer: 6.6 × 10-2
  2. 2. Algebra

    Factorise: x² + 3x + 2

    Answer: (x + 2)(x + 1)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 56°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.25cm
  4. 4. Ratio

    In ratio 10:3:1, what fraction is the third part?

    Answer: 1⁄14
  5. 5. Statistics

    Calculate the mean of: 21, 15, 25, 5, 47, 5, 11, 35

    Answer: 20.5

Thursday 18 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00095 in standard form

    Answer: 9.5 × 10-4
  2. 2. Algebra

    Factorise: x² + 17x + 66

    Answer: (x + 11)(x + 6)
  3. 3. Geometry

    Hypotenuse = 40cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 35.95cm
  4. 4. Ratio

    Simplify the ratio 6kg : 100g

    Answer: 60:1
  5. 5. Statistics

    Calculate the mean of: 12, 46, 25, 24, 45, 39, 15, 47. Give your answer to 2 decimal places

    Answer: 31.63

Friday 19 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 3,300,000 in standard form

    Answer: 3.3 × 106
  2. 2. Algebra

    Factorise: x² - 8x - 9

    Answer: (x + 1)(x - 9)
  3. 3. Geometry

    Adjacent = 27cm, angle = 37°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.35cm
  4. 4. Ratio

    Red, blue and green counters are in the ratio 8:7:2. What fraction of the counters are red?

    Answer: 8⁄17
  5. 5. Statistics

    The mean of 5 numbers is 35. If 4 of them are 24, 39, 22, 48, what is the missing number?

    Answer: 42