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Lintel Nov 25 - Dec 1 25 questions
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Monday 25 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000021 in standard form

    Answer: 2.1 × 10-5
  2. 2. Algebra

    Factorise: x² - 3x - 4

    Answer: (x + 1)(x - 4)
  3. 3. Geometry

    Hypotenuse = 26cm, angle = 48°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.4cm
  4. 4. Ratio

    Divide 133 in the ratio 2:2:3

    Answer: 38, 38 and 57
  5. 5. Statistics

    The mean of 6 numbers is 37. If 5 of them are 48, 34, 41, 30, 20, what is the missing number?

    Answer: 49

Tuesday 26 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 9,300,000 in standard form

    Answer: 9.3 × 106
  2. 2. Algebra

    Factorise: x² - 16x + 64

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

    Adjacent = 23cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 27.41cm
  4. 4. Ratio

    Orange and purple counters are in the ratio 9:14. What fraction of the counters are orange?

    Answer: 9⁄23
  5. 5. Statistics

    The mean of 4 numbers is 36. If 3 of them are 31, 33, 48, what is the missing number?

    Answer: 32

Wednesday 27 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0087 in standard form

    Answer: 8.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 8x - 9

    Answer: (x + 1)(x - 9)
  3. 3. Geometry

    Hypotenuse = 29cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 15.37cm
  4. 4. Ratio

    Simplify: 4:4:8

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

    Calculate the mean of: 16, 34, 13, 38, 13, 13. Give your answer to 2 decimal places

    Answer: 21.17

Thursday 28 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0047 in standard form

    Answer: 4.7 × 10-3
  2. 2. Algebra

    Factorise: x² - 4x - 5

    Answer: (x + 1)(x - 5)
  3. 3. Geometry

    Hypotenuse = 23cm, angle = 42°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.09cm
  4. 4. Ratio

    Simplify: 20:16:8

    Answer: 5:4:2
  5. 5. Statistics

    Calculate the mean of: 39, 39, 42, 30, 45, 20, 17, 23. Give your answer to 2 decimal places

    Answer: 31.88

Friday 29 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 91,000,000 in standard form

    Answer: 9.1 × 107
  2. 2. Algebra

    Factorise: x² + 7x - 18

    Answer: (x + 9)(x - 2)
  3. 3. Geometry

    Adjacent = 30cm, angle = 41°. Find opposite. Give your answer to 2 decimal places

    Answer: 26.08cm
  4. 4. Ratio

    Simplify: 16:20:24

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

    The mean of 4 numbers is 34. If 3 of them are 37, 39, 36, what is the missing number?

    Answer: 24