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Lintel Nov 11 - 17 25 questions
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Monday 11 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 89,000,000 in standard form

    Answer: 8.9 × 107
  2. 2. Algebra

    Factorise: x² - x - 90

    Answer: (x + 9)(x - 10)
  3. 3. Geometry

    Adjacent = 24cm, angle = 46°. Find opposite. Give your answer to 2 decimal places

    Answer: 24.85cm
  4. 4. Ratio

    Black and white sweets are in the ratio 7:8. What fraction of the sweets are white?

    Answer: 8⁄15
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 25, 35, 44, what is the missing number?

    Answer: 40

Tuesday 12 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.046 in standard form

    Answer: 4.6 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 2

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

    Hypotenuse = 26cm, angle = 26°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 23.37cm
  4. 4. Ratio

    Black and white marbles are in the ratio 2:4. What fraction of the marbles are white?

    Answer: 2⁄3
  5. 5. Statistics

    The mean of 6 numbers is 33. If 5 of them are 22, 17, 29, 22, 50, what is the missing number?

    Answer: 58

Wednesday 13 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 33,000 in standard form

    Answer: 3.3 × 104
  2. 2. Algebra

    Factorise: x² - 12x + 35

    Answer: (x - 5)(x - 7)
  3. 3. Geometry

    Adjacent = 26cm, angle = 49°. Find opposite. Give your answer to 2 decimal places

    Answer: 29.91cm
  4. 4. Ratio

    Divide 240 in the ratio 4:3:1

    Answer: 120, 90 and 30
  5. 5. Statistics

    Calculate the mean of: 38, 6, 22, 35, 16, 36, 39, 38

    Answer: 28.75

Thursday 14 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 590,000 in standard form

    Answer: 5.9 × 105
  2. 2. Algebra

    Factorise: x² + 16x + 60

    Answer: (x + 10)(x + 6)
  3. 3. Geometry

    Adjacent = 19cm, angle = 53°. Find opposite. Give your answer to 2 decimal places

    Answer: 25.21cm
  4. 4. Ratio

    Simplify the ratio 3 litres : 400 ml

    Answer: 15:2
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 36, 36, 35, what is the missing number?

    Answer: 21

Friday 15 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.059 in standard form

    Answer: 5.9 × 10-2
  2. 2. Algebra

    Factorise: x² + 3x - 54

    Answer: (x + 9)(x - 6)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 22.94cm
  4. 4. Ratio

    Simplify the ratio 2 litres : 400 ml

    Answer: 5:1
  5. 5. Statistics

    Calculate the mean of: 46, 29, 47, 14, 17, 13, 31. Give your answer to 2 decimal places

    Answer: 28.14