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Lintel Feb 18 - 24 25 questions
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Monday 18 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 97,000 in standard form

    Answer: 9.7 × 104
  2. 2. Algebra

    Factorise: x² - 4x + 3

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

    Hypotenuse = 26cm, angle = 40°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 19.92cm
  4. 4. Ratio

    Black and white beads are in the ratio 15:7. What fraction of the beads are black?

    Answer: 15⁄22
  5. 5. Statistics

    The mean of 6 numbers is 26. If 5 of them are 29, 33, 21, 26, 20, what is the missing number?

    Answer: 27

Tuesday 19 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.016 in standard form

    Answer: 1.6 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 2

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

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

    Answer: 19.2cm
  4. 4. Ratio

    Simplify: 24:12:12

    Answer: 2:1:1
  5. 5. Statistics

    Calculate the mean of: 13, 13, 24, 18, 44, 32, 30. Give your answer to 2 decimal places

    Answer: 24.86

Wednesday 20 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 5,800,000 in standard form

    Answer: 5.8 × 106
  2. 2. Algebra

    Factorise: x² + 2x - 15

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

    Hypotenuse = 31cm, angle = 54°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 18.22cm
  4. 4. Ratio

    Simplify: 15:18:18

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

    The mean of 4 numbers is 29. If 3 of them are 17, 46, 20, what is the missing number?

    Answer: 33

Thursday 21 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0038 in standard form

    Answer: 3.8 × 10-3
  2. 2. Algebra

    Factorise: x² - 20x + 96

    Answer: (x - 8)(x - 12)
  3. 3. Geometry

    Adjacent = 17cm, angle = 59°. Find opposite. Give your answer to 2 decimal places

    Answer: 28.29cm
  4. 4. Ratio

    Divide 140 in the ratio 3:3:4

    Answer: 42, 42 and 56
  5. 5. Statistics

    Calculate the mean of: 31, 12, 19, 34, 28, 16, 9. Give your answer to 2 decimal places

    Answer: 21.29

Friday 22 February 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 120,000 in standard form

    Answer: 1.2 × 105
  2. 2. Algebra

    Factorise: x² - 17x + 60

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

    Hypotenuse = 31cm, angle = 32°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 26.29cm
  4. 4. Ratio

    Simplify: 4:4:12

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

    Calculate the mean of: 44, 7, 17, 34, 45, 47, 40, 22

    Answer: 32