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Lintel Apr 22 - 28 25 questions
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Monday 22 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0017 in standard form

    Answer: 1.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 2x - 63

    Answer: (x + 7)(x - 9)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 43°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 10.97cm
  4. 4. Ratio

    £160.00 is shared between A and B in the ratio 3:2. How much does A receive?

    Answer: £96.00
  5. 5. Statistics

    The mean of 4 numbers is 33. If 3 of them are 23, 18, 48, what is the missing number?

    Answer: 43

Tuesday 23 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 79,000,000 in standard form

    Answer: 7.9 × 107
  2. 2. Algebra

    Factorise: x² - 2x - 48

    Answer: (x + 6)(x - 8)
  3. 3. Geometry

    Adjacent = 14cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 8.75cm
  4. 4. Ratio

    Simplify the ratio m : 10cm

    Answer: 10:1
  5. 5. Statistics

    Calculate the mean of: 5, 15, 31, 18, 18, 20, 21. Give your answer to 2 decimal places

    Answer: 18.29

Wednesday 24 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 20,000,000 in standard form

    Answer: 2 × 107
  2. 2. Algebra

    Factorise: x² - x - 20

    Answer: (x + 4)(x - 5)
  3. 3. Geometry

    Adjacent = 30cm, angle = 38°. Find opposite. Give your answer to 2 decimal places

    Answer: 23.44cm
  4. 4. Ratio

    Simplify: 16:12:16

    Answer: 4:3:4
  5. 5. Statistics

    The mean of 4 numbers is 29. If 3 of them are 34, 29, 16, what is the missing number?

    Answer: 37

Thursday 25 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00021 in standard form

    Answer: 2.1 × 10-4
  2. 2. Algebra

    Factorise: x² - 9x - 10

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

    Hypotenuse = 37cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.75cm
  4. 4. Ratio

    Black and white counters are in the ratio 13:11. What fraction of the counters are white?

    Answer: 11⁄24
  5. 5. Statistics

    Calculate the mean of: 38, 12, 24, 43, 35, 34, 34. Give your answer to 2 decimal places

    Answer: 31.43

Friday 26 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 670,000 in standard form

    Answer: 6.7 × 105
  2. 2. Algebra

    Factorise: x² + 6x - 72

    Answer: (x + 12)(x - 6)
  3. 3. Geometry

    Adjacent = 15cm, angle = 42°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.51cm
  4. 4. Ratio

    Express the second part of 3:8 as a fraction in simplest form

    Answer: 8⁄11
  5. 5. Statistics

    Calculate the mean of: 30, 45, 9, 9, 39, 25, 28. Give your answer to 2 decimal places

    Answer: 26.43