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Lintel Oct 14 - 20 25 questions
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Monday 14 October 2013

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 + 5x - 50

    Answer: (x + 10)(x - 5)
  3. 3. Geometry

    Adjacent = 16cm, angle = 34°. Find opposite. Give your answer to 2 decimal places

    Answer: 10.79cm
  4. 4. Ratio

    Red and blue counters are in the ratio 8:10. What fraction of the counters are red?

    Answer: 4⁄9
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 43, 37, 44, 25, what is the missing number?

    Answer: 21

Tuesday 15 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0074 in standard form

    Answer: 7.4 × 10-3
  2. 2. Algebra

    Factorise: x² + 18x + 72

    Answer: (x + 12)(x + 6)
  3. 3. Geometry

    Hypotenuse = 22cm, angle = 48°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 14.72cm
  4. 4. Ratio

    Simplify: 6:18:18

    Answer: 1:3:3
  5. 5. Statistics

    Calculate the mean of: 8, 30, 9, 13, 33, 47, 25. Give your answer to 2 decimal places

    Answer: 23.57

Wednesday 16 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 7,200,000 in standard form

    Answer: 7.2 × 106
  2. 2. Algebra

    Factorise: x² + 5x - 6

    Answer: (x + 6)(x - 1)
  3. 3. Geometry

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

    Answer: 16.86cm
  4. 4. Ratio

    Simplify: 15:6:18

    Answer: 5:2:6
  5. 5. Statistics

    Calculate the mean of: 25, 28, 7, 48, 38, 49, 14. Give your answer to 2 decimal places

    Answer: 29.86

Thursday 17 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.09 in standard form

    Answer: 9 × 10-2
  2. 2. Algebra

    Factorise: x² + 4x - 32

    Answer: (x + 8)(x - 4)
  3. 3. Geometry

    Hypotenuse = 19cm, angle = 61°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 9.21cm
  4. 4. Ratio

    Simplify: 10:12:8

    Answer: 5:6:4
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 18, 27, 44, what is the missing number?

    Answer: 67

Friday 18 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0041 in standard form

    Answer: 4.1 × 10-3
  2. 2. Algebra

    Factorise: x² + 7x - 30

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

    Hypotenuse = 19cm, angle = 53°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 11.43cm
  4. 4. Ratio

    Simplify: 12:6:10

    Answer: 6:3:5
  5. 5. Statistics

    The mean of 5 numbers is 37. If 4 of them are 44, 25, 32, 32, what is the missing number?

    Answer: 52