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Lintel Apr 11 - 17 25 questions
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Monday 11 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 25,000 in standard form

    Answer: 2.5 × 104
  2. 2. Algebra

    Factorise: x² - 7x - 60

    Answer: (x + 5)(x - 12)
  3. 3. Geometry

    Hypotenuse = 27cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 16.25cm
  4. 4. Ratio

    Orange, purple and pink counters are in the ratio 9:1:10. What fraction of the counters are orange?

    Answer: 9⁄20
  5. 5. Statistics

    The mean of 6 numbers is 32. If 5 of them are 25, 41, 36, 38, 39, what is the missing number?

    Answer: 13

Tuesday 12 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000012 in standard form

    Answer: 1.2 × 10-5
  2. 2. Algebra

    Factorise: x² + 9x - 10

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

    Adjacent = 25cm, angle = 34°. Find opposite. Give your answer to 2 decimal places

    Answer: 16.86cm
  4. 4. Ratio

    £105.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £42.00
  5. 5. Statistics

    The mean of 5 numbers is 31. If 4 of them are 23, 24, 41, 38, what is the missing number?

    Answer: 29

Wednesday 13 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 80,000,000 in standard form

    Answer: 8 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 19cm, angle = 52°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio

    Simplify the ratio 4 litres : 450 ml

    Answer: 80:9
  5. 5. Statistics

    Calculate the mean of: 39, 23, 48, 37, 32, 28, 17

    Answer: 32

Thursday 14 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 55,000,000 in standard form

    Answer: 5.5 × 107
  2. 2. Algebra

    Factorise: x² + x - 72

    Answer: (x + 9)(x - 8)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 64°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 6.58cm
  4. 4. Ratio

    Divide 216 in the ratio 3:4:1

    Answer: 81, 108 and 27
  5. 5. Statistics

    The mean of 6 numbers is 36. If 5 of them are 21, 45, 36, 33, 46, what is the missing number?

    Answer: 35

Friday 15 April 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0084 in standard form

    Answer: 8.4 × 10-3
  2. 2. Algebra

    Factorise: x² + 7x + 10

    Answer: (x + 5)(x + 2)
  3. 3. Geometry

    Adjacent = 23cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 14.37cm
  4. 4. Ratio

    Orange and purple counters are in the ratio 13:6. What fraction of the counters are purple?

    Answer: 6⁄19
  5. 5. Statistics

    Calculate the mean of: 8, 33, 34, 28, 41, 9, 29

    Answer: 26