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Lintel Jan 25 - 31 25 questions
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Monday 25 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 740,000 in standard form

    Answer: 7.4 × 105
  2. 2. Algebra

    Factorise: x² - 4x - 45

    Answer: (x + 5)(x - 9)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 44°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 22.3cm
  4. 4. Ratio

    In ratio 9:1:5, what fraction is the second part?

    Answer: 1⁄15
  5. 5. Statistics

    Calculate the mean of: 46, 19, 7, 10, 13, 48. Give your answer to 2 decimal places

    Answer: 23.83

Tuesday 26 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0087 in standard form

    Answer: 8.7 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 2

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

    Adjacent = 10cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 11.92cm
  4. 4. Ratio

    £280.00 is shared between A and B in the ratio 3:4. How much does A receive?

    Answer: £120.00
  5. 5. Statistics

    Calculate the mean of: 28, 47, 30, 20, 44, 24. Give your answer to 2 decimal places

    Answer: 32.17

Wednesday 27 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 720,000 in standard form

    Answer: 7.2 × 105
  2. 2. Algebra

    Factorise: x² - 2x - 15

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

    Hypotenuse = 22cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 9.64cm
  4. 4. Ratio

    £350.00 is shared between A and B in the ratio 4:3. How much does A receive?

    Answer: £200.00
  5. 5. Statistics

    The mean of 6 numbers is 32. If 5 of them are 33, 46, 37, 38, 25, what is the missing number?

    Answer: 13

Thursday 28 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 4,400,000 in standard form

    Answer: 4.4 × 106
  2. 2. Algebra

    Factorise: x² + x - 12

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

    Hypotenuse = 25cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.12cm
  4. 4. Ratio

    In ratio 5:3:8, what fraction is the second part?

    Answer: 3⁄16
  5. 5. Statistics

    The mean of 5 numbers is 26. If 4 of them are 26, 15, 41, 18, what is the missing number?

    Answer: 30

Friday 29 January 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.073 in standard form

    Answer: 7.3 × 10-2
  2. 2. Algebra

    Factorise: x² - 20x + 100

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

    Adjacent = 18cm, angle = 56°. Find opposite. Give your answer to 2 decimal places

    Answer: 26.69cm
  4. 4. Ratio

    Orange, purple and pink marbles are in the ratio 4:4:10. What fraction of the marbles are orange?

    Answer: 2⁄9
  5. 5. Statistics

    Calculate the mean of: 29, 31, 19, 15, 32, 7, 33, 21. Give your answer to 2 decimal places

    Answer: 23.38