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Lintel Jan 27 - Feb 2 25 questions
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Monday 27 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 670,000,000 in standard form

    Answer: 6.7 × 108
  2. 2. Algebra

    Factorise: x² - 9x + 8

    Answer: (x - 1)(x - 8)
  3. 3. Geometry

    Adjacent = 13cm, angle = 57°. Find opposite. Give your answer to 2 decimal places

    Answer: 20.02cm
  4. 4. Ratio

    Red and blue counters are in the ratio 9:7. What fraction of the counters are red?

    Answer: 9⁄16
  5. 5. Statistics

    Calculate the mean of: 26, 21, 18, 21, 44, 49. Give your answer to 2 decimal places

    Answer: 29.83

Tuesday 28 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 43,000 in standard form

    Answer: 4.3 × 104
  2. 2. Algebra

    Factorise: x² + x - 90

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

    Adjacent = 21cm, angle = 45°. Find opposite

    Answer: 21cm
  4. 4. Ratio

    Express the second part of 4:8 as a fraction in simplest form

    Answer: 2⁄3
  5. 5. Statistics

    Calculate the mean of: 34, 37, 37, 31, 46, 21. Give your answer to 2 decimal places

    Answer: 34.33

Wednesday 29 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000041 in standard form

    Answer: 4.1 × 10-5
  2. 2. Algebra

    Factorise: x² + 3x - 54

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

    Hypotenuse = 32cm, angle = 38°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.22cm
  4. 4. Ratio

    Simplify: 6:9:6

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

    The mean of 5 numbers is 31. If 4 of them are 47, 32, 40, 20, what is the missing number?

    Answer: 16

Thursday 30 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00083 in standard form

    Answer: 8.3 × 10-4
  2. 2. Algebra

    Factorise: x² + 9x - 10

    Answer: (x + 10)(x - 1)
  3. 3. Geometry

    Adjacent = 11cm, angle = 55°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.71cm
  4. 4. Ratio

    Simplify: 6:4:6

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

    The mean of 5 numbers is 27. If 4 of them are 16, 50, 36, 23, what is the missing number?

    Answer: 10

Friday 31 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 59,000,000 in standard form

    Answer: 5.9 × 107
  2. 2. Algebra

    Factorise: x² + 11x + 10

    Answer: (x + 10)(x + 1)
  3. 3. Geometry

    Hypotenuse = 18cm, angle = 45°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio

    Simplify: 24:16:8

    Answer: 3:2:1
  5. 5. Statistics

    Calculate the mean of: 16, 10, 43, 49, 30, 9. Give your answer to 2 decimal places

    Answer: 26.17