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Lintel Apr 25 - May 1 25 questions
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Monday 25 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00056 in standard form

    Answer: 5.6 × 10-4
  2. 2. Algebra

    Factorise: x² - 3x - 4

    Answer: (x + 1)(x - 4)
  3. 3. Geometry

    Adjacent = 16cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.85cm
  4. 4. Ratio

    Orange, purple and pink marbles are in the ratio 7:4:5. What fraction of the marbles are pink?

    Answer: 5⁄16
  5. 5. Statistics

    The mean of 6 numbers is 34. If 5 of them are 50, 20, 48, 19, 32, what is the missing number?

    Answer: 35

Tuesday 26 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 42,000,000 in standard form

    Answer: 4.2 × 107
  2. 2. Algebra

    Factorise: x² - 5x - 14

    Answer: (x + 2)(x - 7)
  3. 3. Geometry

    Hypotenuse = 24cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.37cm
  4. 4. Ratio

    In ratio 4:8:1, what fraction is the third part?

    Answer: 1⁄13
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 46, 30, 45, what is the missing number?

    Answer: 35

Wednesday 27 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000045 in standard form

    Answer: 4.5 × 10-5
  2. 2. Algebra

    Factorise: x² - 6x + 9

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

    Adjacent = 20cm, angle = 31°. Find opposite. Give your answer to 2 decimal places

    Answer: 12.02cm
  4. 4. Ratio

    £294.00 is shared between A and B in the ratio 2:1. How much does A receive?

    Answer: £196.00
  5. 5. Statistics

    Calculate the mean of: 13, 18, 6, 44, 41, 22, 21. Give your answer to 2 decimal places

    Answer: 23.57

Thursday 28 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000054 in standard form

    Answer: 5.4 × 10-5
  2. 2. Algebra

    Factorise: x² + 18x + 80

    Answer: (x + 10)(x + 8)
  3. 3. Geometry

    Adjacent = 15cm, angle = 52°. Find opposite. Give your answer to 2 decimal places

    Answer: 19.2cm
  4. 4. Ratio

    Simplify the ratio 2 hours : 5 minutes

    Answer: 24:1
  5. 5. Statistics

    Calculate the mean of: 5, 28, 20, 33, 10, 47, 35, 25. Give your answer to 2 decimal places

    Answer: 25.38

Friday 29 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 910,000,000 in standard form

    Answer: 9.1 × 108
  2. 2. Algebra

    Factorise: x² - 4x - 21

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

    Hypotenuse = 33cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 21.21cm
  4. 4. Ratio

    In ratio 2:7:11, what fraction is the second part?

    Answer: 7⁄20
  5. 5. Statistics

    The mean of 5 numbers is 28. If 4 of them are 21, 17, 17, 29, what is the missing number?

    Answer: 56