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Lintel May 12 - 18 25 questions
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Monday 12 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000057 in standard form

    Answer: 5.7 × 10-5
  2. 2. Algebra

    Factorise: x² + 6x - 40

    Answer: (x + 10)(x - 4)
  3. 3. Geometry

    Hypotenuse = 35cm, angle = 43°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.6cm
  4. 4. Ratio

    £196.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £140.00
  5. 5. Statistics

    Calculate the mean of: 50, 30, 48, 24, 9, 40

    Answer: 33.5

Tuesday 13 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 85,000 in standard form

    Answer: 8.5 × 104
  2. 2. Algebra

    Factorise: x² - 18x + 80

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

    Adjacent = 26cm, angle = 44°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.11cm
  4. 4. Ratio

    £217.00 is shared between A and B in the ratio 5:2. How much does A receive?

    Answer: £155.00
  5. 5. Statistics

    The mean of 4 numbers is 27. If 3 of them are 29, 39, 21, what is the missing number?

    Answer: 19

Wednesday 14 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 5,000,000 in standard form

    Answer: 5 × 106
  2. 2. Algebra

    Factorise: x² + 13x + 30

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

    Adjacent = 22cm, angle = 43°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.52cm
  4. 4. Ratio

    Simplify: 18:12:18

    Answer: 3:2:3
  5. 5. Statistics

    Calculate the mean of: 29, 40, 11, 33, 33, 28, 26. Give your answer to 2 decimal places

    Answer: 28.57

Thursday 15 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000017 in standard form

    Answer: 1.7 × 10-5
  2. 2. Algebra

    Factorise: x² - x - 20

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

    Hypotenuse = 29cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.05cm
  4. 4. Ratio

    Black and white marbles are in the ratio 11:15. What fraction of the marbles are white?

    Answer: 15⁄26
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 44, 19, 26, 42, what is the missing number?

    Answer: 54

Friday 16 May 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,000,000 in standard form

    Answer: 7 × 106
  2. 2. Algebra

    Factorise: x² + x - 72

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

    Adjacent = 16cm, angle = 54°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.02cm
  4. 4. Ratio

    Black and white marbles are in the ratio 10:12. What fraction of the marbles are black?

    Answer: 5⁄11
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 19, 20, 15, what is the missing number?

    Answer: 66